In short

  1. Sleep and mental health affect each other in both directions. Working on the night is one of the few direct ways into that loop.
  2. You cannot produce sleep by effort. You can raise sleep pressure, keep the body clock steady and lower activation. Then sleep arrives by itself.
  3. For chronic insomnia, the best-tested treatment is CBT-I, recommended ahead of sleeping medication. And at 3 a.m. the task is not to answer the mind, but to change your relationship with your thoughts.

Before you start. This guide is educational. It is not a diagnosis or a treatment plan. If something here matches your situation closely, take it as a reason to talk to someone, not a reason to self-treat. Where to find support.

This guide is based on the webinar “The harder you try, the less you sleep”, which I deliver for teams in organisations. It includes four self-reflection polls (only you see your answers), an interactive sleep-pressure chart, a short “is it time for CBT-I?” checklist, a defusion exercise, guided breathing and a printable night card. Choose a part in the menu, or start with the tiles above.

There is also a longer Polish guide on sleep and insomnia and a sleep self-check on this site (both in Polish).

Poll 1 of 4 · self-reflection

How has your sleep been over the last two weeks?

Choose one answer

Sleep and mental health

Three numbers

~10%
of adults meet criteria for chronic insomnia disorder

Many more have occasional symptoms. If you sleep badly, you are not unusual, and it is not a sign of weakness.

2.6×
the odds of later depression in people with insomnia
without insomnia: 1 2.6

Pooled across 21 studies that followed people forward in time: the sleep problem was measured first, the depression came after.

3,755
people in the trial that tested the direction of causation

Only the sleep was treated (an online CBT-I programme). Mental health symptoms improved too, and the sleep improvement statistically explained the change.

The first two numbers say that sleep and mood travel together. The third shows the direction: only the sleep was changed, and the mind followed.

Confidence: high for all three. The OASIS trial was conducted with university students, so the size of the effect may differ elsewhere, for example in a workplace population. Sources.

The relationship runs both ways

Most of us think of it in one direction: I feel stressed, so I sleep badly. That is true, but it is only half of the picture. The other half changes what you can do about it.

The sleep and mood loop

Stress, low mood and anxiety delay sleep onset and fragment the night. Short or broken sleep raises the risk of depression and anxiety disorders. Stress, low mood, anxiety a difficult period at work or at home Short or broken sleep weeks of poor nights delays sleep, breaks the night 2.6× the odds of depression and anxiety you can step in here ↓

Weeks of poor sleep do not only follow a hard period. They also raise the chance that a hard period begins. Why is this good news? Because sleep is the part of the loop you can work on directly. We often cannot remove the stress at work or at home. But we can change how the night is organised. And when the night improves, mood very often follows.

What we see in the clinic

Sleep problems often appear before a low period becomes obvious, and they often remain after the mood has lifted. Untreated insomnia is one of the better known risk factors for relapse. So in therapy we treat sleep as a target in its own right, not as a side effect that will sort itself out.

This does not mean depression is “caused” by bad sleep. Sleep is one contributing factor among several, and it happens to be a workable one. Treating sleep helps; it does not replace treatment for depression.

One short night

Stronger reactions

The brain’s emotional alarm responds more strongly to unpleasant events, and the brake from the prefrontal cortex is weaker.

A more negative filter

Neutral faces and neutral messages are read as less friendly. The same meeting feels worse than it did last week. The meeting did not change. The reader did.

Less social bandwidth

Patience, humour and willingness to cooperate drop. This is why one bad night is rarely a private matter at work.

Amygdala reactivity to unpleasant images

After a full night
baseline
After ~35 h awake
over 60% more

A small laboratory study (n = 26), after about 35 hours without sleep, which is more than an ordinary bad night. The direction is well supported. Treat the number as an illustration, not a measurement of your Tuesday.

None of this means you are fragile. It means the next day is being run on a system with less regulation available. It is worth knowing that before you make a decision or send a difficult message. After a bad night, the difficult email can wait until the afternoon.

For anyone who works with people

If a colleague is unusually short with you, you are not necessarily seeing their character. You may be seeing their night. That is not an excuse for how people behave. But it is a useful second hypothesis before you take it personally.

What helps you sleep

Two systems, one condition

Sleep is not a decision. It is the result of two systems and one condition. Once you see that, a lot of common advice starts to make sense. And some of it stops making sense.

1. Sleep pressure

It builds up for every hour you are awake and discharges when you sleep. A long nap or a late lie-in spends it early, so there is less left for the night.

Protect it: no long naps, one fixed wake-up time.

2. The body clock

It decides when sleep is biologically easy. It is set mainly by light and by a regular rhythm, not by how tired you feel.

Set it: daylight in the morning, dim light late.

3. Activation

The condition. If the body and mind are in alert mode, sleep does not arrive, even when pressure is high and the clock is right.

This is where most insomnia actually lives.

See how much sleep pressure is left for the night

Sleep pressure across the day from 6:00 to 6:00. Pressure rises while awake and falls during sleep. night 6:0012:0018:000:006:00 sleep pressure 23:00
Sleep pressure at 23:00
0/100

An illustrative sketch based on Borbély’s two-process model (time constants from the literature). The numbers are an illustration, not a measurement.

You cannot produce sleep. You can only raise sleep pressure, keep the clock regular and lower activation. Then sleep happens by itself.

Night owl or early bird? And caffeine?

Chronotype. Body clocks differ between people, partly genetically. For sleep, regularity matters more than the particular hour.

Caffeine blocks the signal of sleep pressure (adenosine). The pressure is still there; you just stop feeling it. How long caffeine lasts varies enormously between people; more in the questions at the end.

What you do when sleep will not come

Poll 2 of 4 · choose everything that applies

What do you already do when sleep will not come?

Nothing on this list is shameful. Every one of these is a reasonable thing a tired person does at two in the morning. But they are not equivalent: some lower activation and some quietly raise it. Judge them now with the model from the previous section.

Tick all that apply

Sleep hygiene, honestly

Useful ground rules, not a treatment. On its own, sleep hygiene is the weakest of the recognised insomnia interventions.

The familiar rules, ranked by what they actually do

  1. Same wake-up time dailyhighAnchors the body clock and protects sleep pressure. The single best habit, weekends included.
  2. Daylight in the morninghighSets the clock far more strongly than any evening ritual. And underused: outside if you can, not through a window.
  3. No caffeine from early afternoonmoderateRemoves a real blocker of sleep pressure, especially for slow metabolisers. Varies a lot between people.
  4. Alcohol as a nightcapharmfulShortens falling asleep, then fragments the second half of the night. The one most people get backwards.
  5. Cool, dark, quiet roomlowRemoves obstacles; it does not create sleep. Necessary, not sufficient.
  6. No screens before bedlowThe content and the activation matter more than the blue light. Often overstated: a work email at 11 p.m. is the problem, not the colour of the screen.

What the guidelines say

The American Academy of Sleep Medicine (AASM, 2021) makes a conditional recommendation against sleep hygiene as a single-component therapy for chronic insomnia. Not because it is harmful. Because it is not enough, and people conclude that nothing works.

Sleep hygiene is the floor of the building, not the building.

There is a second, subtler problem with the list. For someone already anxious about sleep, a long list of rules becomes six more ways to fail before midnight. Some people lie awake worrying that the bedroom is two degrees too warm. That worry costs them far more sleep than the temperature ever did.

The effort trap

In most areas more effort gives a better result. With sleep, more effort gives less sleep. more effort → result → study, sport, work sleep

Every other problem gets better when you try harder. Sleep gets worse.

Effort is activation, and activation blocks sleep. This is why the title of this guide is not a slogan. The goal is not to try better. The goal is to stop making the night a task.

Trying to sleep

Lying there deciding to fall asleep now is effort. And effort is activation.

Checking the clock

“Five hours left” turns the night into a countdown you are losing.

Perfect sleep rules

Each new rule is one more exam you can fail tonight.

How a few bad nights become months

  1. 1

    Stress triggers a few bad nights. That is normal, and it would usually pass.

  2. 2

    You start managing sleep. Earlier to bed to catch up. The evening out cancelled. The app. The clock. Sleep has become a project with a performance target.

  3. 3

    The bad nights continue after the stress is gone. The insomnia is now maintained by the solution, not by the original cause.

Sleep medicine describes this with the “3P” model (predisposing, precipitating and perpetuating factors) and the concept of sleep effort.

So the rest of this guide does not give you better techniques for trying. It takes the night out of the category of things you perform.

CBT-I

What CBT-I delivers

CBT-I is a short, structured programme, usually four to eight sessions, delivered by a psychologist, psychotherapist or doctor. Well-tested digital versions exist too. Here is what pooled data from 19 randomised trials show.

Change versus control (meta-analysis)

Falling asleep
19 min faster
Awake at night
26 min less
Sleep efficiency
about +10 points
Total sleep time
no reliable increase

Sleep efficiency is the share of your time in bed that you actually spend asleep. These are averages: some people do much better, some less well.

Solid first, longer later

CBT-I does not add hours straight away. It consolidates the hours you have. A solid night feels dramatically better than the same number of fragmented hours. Total sleep often grows later, once the system settles.

The gains last

Benefits are generally maintained after treatment ends. That is the main difference from sleeping medication, where the benefit tends to stop when the medication stops.

The strongest rating

American (AASM 2021) and European (2023) guidelines give multicomponent CBT-I their strongest recommendation: it should be offered first, before medication.

The three working parts

Behaviour

Stimulus control

Rebuilds the link between bed and sleep, which insomnia has broken.

safe to start on your own

Timing

Sleep consolidation

Shortens time in bed so that sleep becomes deep and continuous again.

with guidance only

Mind

Cognitive work

Takes apart the catastrophic prediction that drives night-time arousal.

safe to start on your own

Notice what is missing from this list: there is no relaxation trick to make you fall asleep faster. Every component removes something that is keeping you awake. It is subtraction, not addition. That is also why it keeps working after the programme ends: you have not acquired a technique you must keep performing. You have removed what was in the way.

Stimulus control

After weeks of bad nights you get into bed and your body already knows what is coming: lying awake, frustration, the clock. The bed stops being a cue for sleep and becomes a cue for being awake and annoyed. The body learns this the way it learns any association. Stimulus control unlearns it. It feels counter-intuitive, because the instruction is to spend less time in bed, not more.

The five instructions

  1. 1

    Go to bed only when you are sleepy, not merely tired. Tired is heavy. Sleepy is when your eyes actually close.

  2. 2

    The bed is for sleep and sex only. No work, no scrolling, no series.

  3. 3

    Awake and frustrated for roughly 20 minutes? Get up. Another room, dim light, something quiet and boring. Do not check the clock to measure it; estimate.

  4. 4

    Return only when sleepy again. Repeat as many times as the night needs. If it is three times, it is three times.

  5. 5

    Get up at the same time every morning, whatever the night was like.

Expect two or three harder nights before it settles. That is part of the method, not a sign it is failing.

Three objections I always hear

“I will be even more tired if I get up.” For two or three nights, yes. After that, almost always less. You are trading a short cost for the association being rebuilt.

“I share a bed. I will wake my partner.” Move quietly, have a dressing gown and a lamp ready in the other room, and tell them in advance what you are doing and why. Most partners prefer this to someone turning over for two hours beside them.

“How do I know it has been 20 minutes without looking?” You estimate. The point is not accuracy; the point is that you stop waiting indefinitely. And please do not set a timer. A timer is one more measurement of your performance.

Live in one room? Sit up in a chair in that room, with a different light on. The change of place and posture is what matters. A book? A paper book in low light is fine. The phone is not.

Sleep consolidation

Someone sleeping five hours but lying in bed for nine spends four hours training themselves to be awake there. So time in bed is reduced towards the actual sleep time, then extended again step by step as sleep becomes solid.

Sketch: time in bed and sleep

Before
sleepsleep
At first
solid sleep
Then
window grows step by step
sleepawake in bed

Deliberately without hours: the sleep window is set and adjusted week by week by a clinician, against your sleep diary.

It works very well. It is the fastest-acting part of CBT-I, and the one people most often get wrong on their own: they set the window far too short, feel terrible after four days, stop, and conclude that CBT-I “does not work for them”. In fact they used the strongest component without the part that makes it safe. For a while it increases daytime sleepiness, which is exactly why it needs someone watching the numbers with you.

Do not self-prescribe if

  • you have bipolar disorder or epilepsy,
  • you may have untreated sleep apnoea (diagnosis first),
  • you drive or operate machinery for work,
  • you are pregnant or work night shifts.

Treat this section as something to ask for by name, not as a plan to start tonight. Say to your doctor or therapist: “I would like to try sleep restriction” (or sleep consolidation). They will know exactly what you mean.

What you can do on your own now: a sleep diary

For two weeks, write down each morning, on paper: when you went to bed, roughly how long it took to fall asleep, the times you woke, when you got up. Nothing clever. It is the first thing any clinician will ask for, and it will save you a session. A ready template is on the printable card.

Do not use a sleep-tracking watch for this. It measures sleep poorly and turns it into a nightly score, which raises sleep effort. There is a name for that pattern: orthosomnia.

The catastrophic prediction

The catastrophic prediction loop

Thought“If I do not sleep now, tomorrow will be a disaster.”
BodyA threat has been announced, so the system switches to alert.
ResultNo sleep, which confirms the thought and strengthens it for tomorrow.

↺ the next night the thought returns stronger

The body does not treat that thought as an idea. It treats it as an announcement of threat. You are not arguing the thought away, and you are not replacing it with positive thinking. You are checking the prediction against the record and counting what it costs.

Question 1

What actually happened last time?

Asked honestly, most people report that the day after a bad night was unpleasant and entirely survivable. The disaster is predicted far more often than it arrives.

Question 2

What does believing it cost me right now?

Believing the prediction raises the stakes of the night, and raised stakes are activation. The thought is not just inaccurate. It is expensive.

Question 3

What would I say to a colleague?

If someone told you this at 11 p.m., would you answer: “You are right, tomorrow is ruined”? We are generous with other people and severe with ourselves at two in the morning.

When to do this? In the evening, or the next day, in daylight, when the mind is cooler. Not in bed at 3 a.m. At 3 a.m. you use the practices from part four.

“But sometimes tomorrow really does matter”

Agreed. Some days genuinely depend on being rested. Even then, believing the prediction at midnight only reduces the sleep you still might get.

When to ask for help

Talk to a doctor

  • Loud snoring, pauses in breathing, or waking unrefreshed after a full night
  • Strong urges to move the legs in the evening
  • Falling asleep during the day without meaning to
  • You want to come off sleeping medication

Ask for CBT-I

  • Difficulty sleeping three or more nights a week
  • Lasting longer than three months
  • Clearly affecting your days, not only your nights
  • Self-help has been tried and has not held

Do not wait

  • Low mood or anxiety that persists through the day
  • Loss of interest in things that used to matter
  • Alcohol or medication used to get through the night
  • Thoughts that worry you

Many people go years without asking for help with insomnia, even though a short treatment with strong evidence exists. Asking for help with sleep is not an admission that you are not coping. It is like seeing a physiotherapist about a knee: a specific problem with a specific treatment. If your employer offers an employee assistance programme, sleep is a perfectly good reason to use it. You do not need to be in crisis.

Tool · transparent rules, no scoring

Is it time to ask for CBT-I?

Tick the statements that fit the last few weeks. This is not a test or a diagnosis, and nothing is saved.

Sleep

Body

Wellbeing

The mind at 3 a.m.

What comes at night

Emptying the mind is not possible, and trying to do it is more effort, which means more activation. The goal is different. But first, one question.

Poll 3 of 4 · choose everything that applies

What does your mind reach for at 3 a.m.?

Tick all that apply

Why night-time thinking convinces

It feels like problem-solving

Rumination uses the same words as planning, so the mind treats it as useful work. But it circles instead of concluding.

Nothing else is competing

At 3 a.m. there is no task, no colleague, no daylight, nothing to contradict the story. A worry that would look ordinary at noon fills the whole room.

You cannot act on it

The mind raises a problem and finds every route to it closed until morning. That gap between urgency and impossibility is itself activating.

Planning

  • ends in a decision or a first step
  • is about what can be done
  • has an end, followed by relief

Rumination

  • ends only when you fall asleep
  • circles what cannot be changed right now
  • each lap raises activation

So the problem is not the content of the thoughts. At 3 a.m. the content is almost never solvable anyway. The problem is the relationship: you are treating the mind as a council that must be answered.

In the evening: three lines

Before bed, write briefly: what matters tomorrow, the first action, and anything unresolved. The effect is not organisational. The mind gets evidence that it has been heard, and a mind that has been heard argues less at three.

From research: in a sleep-laboratory study with polysomnography, people who spent 5 minutes at bedtime writing a specific to-do list for the coming days fell asleep faster than people who wrote about tasks already completed; the more specific the list, the faster they fell asleep (Scullin et al., 2018; healthy young adults, n = 57).

And during the night? A keyword on a notepad by the bed is fine. Opening a notebook and working is not. The rule: capture, do not process. Your best ideas come at night? It happens. They rarely survive daylight, so the same rule applies.

Defusion

Move one

Name the frame

Instead of “I have ruined the project”, say inwardly: “I am having the thought that I have ruined the project.”

It sounds like a word game. It is not. The content stays the same; your distance from it changes, and so does the alarm it sets off.

Same content, smaller alarm.

Move two

Postpone, do not suppress

“Noted. You get fifteen minutes tomorrow at nine.”

And keep the appointment, at least sometimes. If you never keep it, the mind stops believing you.

Suppression rebounds. An appointment is usually accepted.

Move three

Return to the body

The breath. The weight of the body on the mattress.

This is not a sleep trick. If you use it as a trick, it becomes effort. It is simply somewhere other than the story to rest attention.

The mind will wander again. Returning is the practice, not staying.

    What you type stays in this browser tab and disappears when you close it.

    A thought is an event in the mind, not an instruction and not a verdict. You can let it be there and do nothing about it. At 3 a.m. that is usually the wisest available option.

    Where this comes from: defusion comes from acceptance and commitment therapy (ACT); the attentional element comes from mindfulness practice. The evidence base for insomnia specifically is smaller than for classical CBT-I, though the results are promising (review: Salari et al., 2020; randomised trial of MBTI: Ong et al., 2014).

    “I tried meditation and it made me more awake”

    Very common, and usually a sign it was being used as a sleep technique. The expectation is what activates, not the practice. And if you cannot empty your mind: good. Nobody can. That is not the task here.

    Everything in this guide has the same shape: we stop fighting the night and remove what is in the way. Stimulus control removes the wrong association. Dropping the catastrophic prediction removes the alarm. Defusion removes the obligation to answer the mind. None of it is a technique for producing sleep. That is the point.

    Four steps and breathing

    1. Notice and name

      “Thinking is happening.” Not good, not bad. Just noticed.

    2. Drop the goal

      Say it plainly: “I am not trying to fall asleep. I am resting until morning.”

    3. Lengthen the out-breath

      Breathe in normally, a little longer out. Ten breaths. No counting system to get right.

    4. Decide at about 20 minutes

      Still awake and frustrated? Get up, dim light, something quiet. Return when sleepy.

    Step two is the one that does the work. Lying in bed resting, awake, is a perfectly acceptable outcome for a night. And here is the paradox of this guide one more time: that resting state is also the state from which sleep most often arrives. Not because you used it as a trick. Because you stopped trying.

    Practice: ten breaths with a longer out-breath

    Sit how you are. You do not need to close your eyes. Breathe in normally; let the out-breath be a little longer. If the mind goes somewhere, that is what minds do: come back.

    Practise during the day, so you do not reach for the phone at night. The point is for the rhythm to become familiar.

    If you are still awake afterwards, that is not failure. Nothing here is a switch. It is a way of spending the night that does not make the next one worse. Over a week or two, that is what changes the pattern.

    Questions and work

    Common questions

    How much and when

    How many hours of sleep do I need?

    The usual recommended range for adults is seven to nine hours, but the range between people is wide. How you function during the day matters more than the number. “Eight hours for everyone” is a simplification, and a rigid target easily becomes one more performance goal.

    Hirshkowitz et al., 2015 (National Sleep Foundation).

    Do weekend lie-ins help?

    Honestly, one extra hour is fine for most people. Three hours is a small jet lag every week: the clock shifts, and falling asleep on Sunday evening gets harder. The research literature calls it social jetlag.

    Wittmann et al., 2006.

    Naps: yes or no?

    Short (around 20–30 minutes) and early in the afternoon. If you have trouble sleeping at night, better to skip them: every nap spends some of the sleep pressure you need in the evening (see the chart).

    I wake at the same hour every night. Is something wrong?

    Common, and usually not sinister. It becomes a problem when you start expecting it, because the expectation itself activates. If it comes with loud snoring or gasping for breath, talk to a doctor.

    Substances and medication

    Melatonin?

    Weak for ordinary insomnia: in a meta-analysis it shortened time to fall asleep by only a few minutes on average. AASM guidelines do not recommend it for chronic insomnia. It is more useful for body-clock problems such as jet lag. Ask a doctor before using it.

    Ferracioli-Oda et al., 2013; Sateia et al., 2017 (AASM).

    Caffeine: until when?

    Caffeine blocks the signal of sleep pressure. The pressure is still there; you just stop feeling it. Its half-life varies enormously between people. In a study with objective sleep measurement, a large dose (400 mg) taken even six hours before bed reduced sleep by more than an hour. A safe rule: coffee before early afternoon, and if you sleep badly, see what changes when you move it earlier.

    Drake et al., 2013.

    A glass of wine to help me sleep?

    Alcohol speeds up falling asleep, but in the second half of the night sleep becomes lighter and more broken. When alcohol becomes the way through the night, it is a signal to talk to a professional (see when to ask for help).

    Ebrahim et al., 2013.

    Sleeping pills

    They have a place: short term and with a doctor. Never stop them on your own. CBT-I is recommended as the first-line treatment, and it also helps if you and your doctor want to reduce medication gradually.

    Technology

    Sleep trackers and apps

    They measure sleep poorly, especially time awake. A nightly “sleep score” easily turns sleep into an exam and raises sleep effort. This pattern has been described as orthosomnia. If you want to measure something, a paper diary filled in each morning is better.

    Baron et al., 2017.

    Can an app help?

    Digital CBT-I programmes have real evidence. Generic sleep-sound apps do not. The difference is whether the app changes your behaviour or just plays something.

    Zachariae et al., 2016 (meta-analysis).

    Screens and blue light

    The light effect exists, but it is small compared with content and timing. In a laboratory study, reading on a light-emitting e-reader for several evenings delayed falling asleep by around ten minutes. A work email at 11 p.m. does more harm than the colour of the screen. Blue-light glasses: if they help you, fine, but they are not the main lever.

    Chang et al., 2015.

    Special situations

    I work shifts

    The rules change: the fixed wake-up time rule does not transfer directly to a shift rota. This is worth planning individually, in a consultation.

    I have small children

    The night is not in your control. Shift the goal from fixing sleep to protecting the wake-up time where you can, sharing the night-time load, and not adding rules you cannot keep.

    Menopause

    A real and very common cause of night waking. Medical conversation first, behavioural work alongside it. CBT-I improved sleep in perimenopausal and postmenopausal women with hot flushes too.

    McCurry et al., 2016.

    Nightmares

    Frequent, distressing nightmares have their own effective treatments, such as imagery rehearsal therapy. They are worth asking about in a consultation, especially if they started after a difficult event.

    Morgenthaler et al., 2018 (AASM).

    Exercise and food

    Does exercise help sleep?

    Overall, yes: regular physical activity is linked with better sleep. Intense exercise very late suits some people and not others. It is individual.

    Kredlow et al., 2015 (meta-analysis).

    Evening meals

    A very large late meal disturbs sleep. Going to bed hungry does too. Nothing dramatic either way.

    Sleep and teams

    Sleep is not only a private matter. Research on leadership shows that a leader’s poor night carries over into how they treat their team the next day, and that late-night smartphone use for work lowers next-day engagement.

    The second hypothesis

    When someone is unusually short with you, consider their night before you judge their character.

    Late messages

    A message sent at 11 p.m. invites work into sleep time. Scheduling it for the morning costs nothing.

    Decisions after a bad night

    Where possible, hold important conversations and decisions after a good night, not after a night flight or an on-call shift.

    Support is for everyone

    Say openly that sleep is a good enough reason to use the support programme. It lowers the threshold.

    Barnes et al., 2015; Lanaj, Johnson and Barnes, 2014.

    To finish

    One change for two weeks

    Poll 4 of 4 · choose one only

    Which one thing will you try this week?

    After a guide like this, it is tempting to change everything: new bedtime, no coffee, no phone, an app, breathing. That usually lasts about four days and then collapses, and the conclusion is: “none of this works for me”. But reforming your entire night at once is just a larger version of trying harder. One change, two weeks, then decide whether to add anything.

    Choose one change

    Cannot choose? Take the wake-up time. Everything else builds on it.

    Five things to take away

    1. Sleep and mental health run both ways. Working on the night is one of the few direct ways into that loop.
    2. One fixed wake-up time and morning daylight outperform every evening ritual on the usual list.
    3. You cannot perform sleep. You can raise sleep pressure, keep the clock steady and lower activation.
    4. At 3 a.m. the task is not to answer the mind. Name the thought, postpone it, return to the body.
    5. Three bad nights a week for three months is not a habit problem. Ask for CBT-I by name.

    If you change one thing after reading this, make it the wake-up time. Everything else needs it to build on.

    Night card

    One page with what matters most, and a second with a two-week sleep diary. Keep it by the bed, or in the room you go to at night.

    Night card

    The harder you try, the less you sleep · Jarosław Chybicki · chybicki.pl/en/materials/sleep

    Stimulus control: 5 rules

    1. Bed only when sleepy, not merely tired.
    2. The bed is for sleep and sex only.
    3. About 20 minutes awake and frustrated? Get up, another room, dim light.
    4. Return when sleepy. As many times as needed.
    5. Same wake-up time every morning.

    At 3 a.m.: 4 steps

    1. Notice and name: “Thinking is happening.”
    2. Drop the goal: “I am not trying to sleep. I am resting until morning.”
    3. Lengthen the out-breath: ten breaths.
    4. Decide at about 20 minutes: get up or stay.

    When a thought arrives

    • “I am having the thought that…”
    • “Noted. You get fifteen minutes tomorrow at nine.”
    • Back to the breath and the weight of the body. Wandering is not failure.

    In daylight, not at night

    • What actually happened last time?
    • What does believing this thought cost me?
    • What would I say to a colleague?

    My one change for 2 weeks

    In the evening: 3 lines

    • What matters tomorrow?
    • What is the first action?
    • What is still unresolved?

    When to ask for help

    Doctor: snoring with pauses in breathing, restless legs, falling asleep in the day without meaning to, coming off medication. CBT-I: 3+ nights a week, for over 3 months, affecting your days. Do not wait: low mood or anxiety through the day, loss of interest, alcohol or medication to get through the night, worrying thoughts.

    Support: your employer’s assistance programme (EAP), or a psychologist or psychotherapist. Urgent, in Poland: 116 123 · 800 70 2222 (24/7) · 112. Elsewhere: your local emergency number.

    Educational material, not a diagnosis. Jarosław Chybicki · chybicki.pl

    Sleep diary: 2 weeks

    Fill it in each morning, on paper, roughly. Do not look at the clock during the night.

    DayDateWent to bed atFell asleep after about (min)Woke up: how often, how longGot up atNap / alcohol / caffeine after 2 p.m.How I felt in the day (1–5)
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14

    Bring the diary to a consultation. Do not analyse it every day: it is not a score to improve.

    Sources

    Everything in this guide came from somewhere. Where the evidence is strong, it says so. Where it is thinner, it says that too. The sleep field is full of confident claims that do not hold up: eight hours for everyone, blue light as the main villain, apps promising to fix your brain waves. If you are going to change something about your nights, you are entitled to know how good the evidence is.

    ClaimSourceConfidence
    Around 10% of adults have chronic insomnia disorder; CBT-I is first-lineEdinger et al., AASM clinical practice guideline, J Clin Sleep Med, 2021high
    Insomnia: roughly 2.6× the odds of later depressionBaglioni et al., meta-analysis of 21 longitudinal studies, J Affect Disord, 2011 (OR 2.60, 95% CI 1.98–3.42)high
    Treating sleep alone improves mental health symptomsFreeman et al., OASIS randomised controlled trial, n = 3,755, Lancet Psychiatry, 2017high student sample
    CBT-I: −19 min to sleep, −26 min awake, about +10 points efficiencyTrauer et al., meta-analysis of 19 randomised trials, Ann Intern Med, 2015high
    Sleep hygiene is not effective as a stand-alone treatmentEdinger et al., AASM guideline, 2021 (conditional recommendation against)high
    Over 60% greater amygdala reactivity after a sleepless nightYoo, Gujar, Hu, Jolesz & Walker, Curr Biol, 2007 (n = 26)moderate small sample
    Defusion and acceptance-based work with night-time thoughtsACT literature; a smaller evidence base for insomnia than classical CBT-I (Salari et al., 2020)moderate
    Full reference list (including the extended sections)
    • Baglioni, C. et al. (2011). Insomnia as a predictor of depression: A meta-analytic evaluation of longitudinal epidemiological studies. Journal of Affective Disorders, 135, 10–19.
    • Barnes, C. M., Lucianetti, L., Bhave, D. P., & Christian, M. S. (2015). “You wouldn’t like me when I’m sleepy”: Leaders’ sleep, daily abusive supervision, and work unit engagement. Academy of Management Journal, 58(5), 1419–1437.
    • Baron, K. G., Abbott, S., Jao, N., Manalo, N., & Mullen, R. (2017). Orthosomnia: Are some patients taking the quantified self too far? Journal of Clinical Sleep Medicine, 13(2), 351–354.
    • Borbély, A. A. (1982). A two process model of sleep regulation. Human Neurobiology, 1, 195–204.
    • Broomfield, N. M., & Espie, C. A. (2005). Towards a valid, reliable measure of sleep effort. Journal of Sleep Research, 14, 401–407.
    • Chang, A.-M., Aeschbach, D., Duffy, J. F., & Czeisler, C. A. (2015). Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. PNAS, 112(4), 1232–1237.
    • Daan, S., Beersma, D. G., & Borbély, A. A. (1984). Timing of human sleep: Recovery process gated by a circadian pacemaker. American Journal of Physiology, 246, R161–R183.
    • Drake, C., Roehrs, T., Shambroom, J., & Roth, T. (2013). Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. Journal of Clinical Sleep Medicine, 9(11), 1195–1200.
    • Ebrahim, I. O., Shapiro, C. M., Williams, A. J., & Fenwick, P. B. (2013). Alcohol and sleep I: Effects on normal sleep. Alcoholism: Clinical and Experimental Research, 37(4), 539–549.
    • Edinger, J. D. et al. (2021). Behavioral and psychological treatments for chronic insomnia disorder in adults: An American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine, 17(2), 255–262.
    • Espie, C. A., Broomfield, N. M., MacMahon, K. M., Macphee, L. M., & Taylor, L. M. (2006). The attention–intention–effort pathway in the development of psychophysiologic insomnia. Sleep Medicine Reviews, 10(4), 215–245.
    • Ferracioli-Oda, E., Qawasmi, A., & Bloch, M. H. (2013). Meta-analysis: Melatonin for the treatment of primary sleep disorders. PLoS ONE, 8(5), e63773.
    • Freeman, D. et al. (2017). The effects of improving sleep on mental health (OASIS): A randomised controlled trial with mediation analysis. The Lancet Psychiatry, 4(10), 749–758.
    • Harvey, A. G. (2002). A cognitive model of insomnia. Behaviour Research and Therapy, 40(8), 869–893.
    • Hirshkowitz, M. et al. (2015). National Sleep Foundation’s sleep time duration recommendations. Sleep Health, 1(1), 40–43.
    • Kredlow, M. A., Capozzoli, M. C., Hearon, B. A., Calkins, A. W., & Otto, M. W. (2015). The effects of physical activity on sleep: A meta-analytic review. Journal of Behavioral Medicine, 38(3), 427–449.
    • Lanaj, K., Johnson, R. E., & Barnes, C. M. (2014). Beginning the workday yet already depleted? Consequences of late-night smartphone use and sleep. Organizational Behavior and Human Decision Processes, 124(1), 11–23.
    • McCurry, S. M. et al. (2016). Telephone-based cognitive behavioral therapy for insomnia in perimenopausal and postmenopausal women with vasomotor symptoms: A MsFLASH randomized clinical trial. JAMA Internal Medicine, 176(7), 913–920.
    • Morgenthaler, T. I. et al. (2018). Position paper for the treatment of nightmare disorder in adults. Journal of Clinical Sleep Medicine, 14(6), 1041–1055.
    • Ong, J. C. et al. (2014). A randomized controlled trial of mindfulness meditation for chronic insomnia. Sleep, 37(9), 1553–1563.
    • Riemann, D. et al. (2023). The European Insomnia Guideline: An update on the diagnosis and treatment of insomnia 2023. Journal of Sleep Research, 32(6), e14035.
    • Salari, N. et al. (2020). The effect of acceptance and commitment therapy on insomnia and sleep quality: A systematic review. BMC Neurology, 20, 300.
    • Sateia, M. J. et al. (2017). Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults. Journal of Clinical Sleep Medicine, 13(2), 307–349.
    • Scullin, M. K., Krueger, M. L., Ballard, H. K., Pruett, N., & Bliwise, D. L. (2018). The effects of bedtime writing on difficulty falling asleep: A polysomnographic study comparing to-do lists and completed activity lists. Journal of Experimental Psychology: General, 147(1), 139–146.
    • Spielman, A. J., Caruso, L. S., & Glovinsky, P. B. (1987). A behavioral perspective on insomnia treatment. Psychiatric Clinics of North America, 10(4), 541–553.
    • Trauer, J. M., Qian, M. Y., Doyle, J. S., Rajaratnam, S. M., & Cunnington, D. (2015). Cognitive behavioral therapy for chronic insomnia: A systematic review and meta-analysis. Annals of Internal Medicine, 163(3), 191–204.
    • van der Helm, E., Gujar, N., & Walker, M. P. (2010). Sleep deprivation impairs the accurate recognition of human emotions. Sleep, 33(3), 335–342.
    • Wittmann, M., Dinich, J., Merrow, M., & Roenneberg, T. (2006). Social jetlag: Misalignment of biological and social time. Chronobiology International, 23(1–2), 497–509.
    • Yoo, S.-S., Gujar, N., Hu, P., Jolesz, F. A., & Walker, M. P. (2007). The human emotional brain without sleep: A prefrontal amygdala disconnect. Current Biology, 17(20), R877–R878.
    • Zachariae, R., Lyby, M. S., Ritterband, L. M., & O’Toole, M. S. (2016). Efficacy of internet-delivered cognitive-behavioral therapy for insomnia: A systematic review and meta-analysis of randomized controlled trials. Sleep Medicine Reviews, 30, 1–10.

    Where to find support

    If your employer has an employee assistance programme (EAP), you can talk to a psychologist there confidentially and free of charge. Sleep is a good enough reason. You can also see a psychologist, psychotherapist or doctor privately.

    A consultation with a psychologist

    When sleep has not returned to normal for weeks, or comes with tension, anxiety or low mood.

    CBT-I

    When the difficulties have lasted more than three months. Ask for it by name and bring your sleep diary.

    A doctor

    For snoring with pauses in breathing, restless legs, falling asleep during the day without meaning to, or coming off medication.

    When you need help now

    If you are having thoughts of harming yourself, do not stay alone with them. In Poland:

    116 123crisis helpline, 24/7
    800 70 2222Support Centre, 24/7
    112emergency number

    Outside Poland, call your local emergency number.

    Sleep is not something you do.
    It is something that happens when you stop doing.

    I hope tonight is a little easier.