CBT-I lesson 4: calming thoughts about sleep

You lie down, and your mind starts to race. "What if I don't sleep again? Tomorrow will be a disaster." Thoughts like these are very common with insomnia. They also make sleep harder.

This lesson teaches two skills from CBT for insomnia. The first is worry time, a set time each day to deal with worries so they do not follow you to bed. The second is decatastrophizing, a way to shrink "worst case" thoughts about sleep down to their real size.

Why this step matters

Insomnia often starts with stress. It keeps going partly because of how we think about sleep. Sleep experts describe dread about the coming night and heavy concern about how you will function the next day. Both help keep insomnia going.²

Worry is a form of alertness. When your mind is busy and your body is tense, it is hard to drift off. Then a bad night adds more worry, and the cycle repeats.⁴

The thinking part of CBT-I is called cognitive therapy. A clinician uses questions, thought records and small experiments to help you spot and change unhelpful beliefs about sleep.¹ The U.S. National Heart, Lung, and Blood Institute says this part helps you feel less nervous about not being able to sleep.⁶

Evidence: full CBT-I, which includes this step Strong evidence the thinking part on its own Limited research

Full CBT-I has strong support. But too few studies have tested the thinking part by itself to judge it alone.¹ That is why this lesson is meant to be used together with the others.

Thoughts that keep people awake

Here are common sleep thoughts, with calmer ways to see them. Look for ones that sound like you.

Skill 1: Worry time

Worry time (also called worry postponement) gives your worries a set daily appointment. When a worry shows up at another time, you note it and save it for later.³

1. Pick a time and place. Choose about 20 minutes, at the same time each day. Early evening works for many people. Do not pick a time close to bedtime.³
2. Choose a spot you do not use to relax. Sit at a table or desk, not your bed or favorite chair.³
3. Carry a small notebook. When a worry pops up during the day, write a few words about it. Tell yourself, "I'll deal with this at 6 o'clock."³
4. Bring your mind back. Turn your attention to what you are doing right now. Then do something useful or pleasant.³
5. At worry time, read your list. Some worries will no longer matter. Cross those off. For the rest, think them through on paper and stay within your time limit.³
6. Turn worries into plans. For a problem you can act on, write one small next step. For one you cannot control, write "out of my hands for now."
7. Close the notebook. This marks the end. Do something calming afterward.
8. At night, use one sentence. If a worry comes up in bed, say to yourself, "That goes in tomorrow's worry time." If it will not leave, jot it on a pad by the bed. Writing worries down can move them from your head onto paper.⁵

Skill 2: Decatastrophizing

Catastrophizing means jumping to the worst possible outcome. It is one of the thinking habits that keeps insomnia going.⁴ Decatastrophizing is a way to check that leap. You can do it in writing during worry time or with our thought check tool.

1. Write the scary thought. For example: "If I don't sleep tonight, I'll fall apart at work tomorrow."
2. Rate how strongly you believe it, from 0 to 100.
3. Ask: what is the worst that could happen? Write it down plainly.
4. Ask: what is the most likely thing to happen? Think back to past bad nights. Most people feel tired and a bit short-tempered, and still get through the day.
5. Ask: if it did go badly, how would I cope? List real steps. You could take a short walk, keep the day light, or go to bed when your window opens.
6. Look for the evidence. Check your sleep diary. How did you manage after your last few poor nights?
7. Write a calmer thought. For example: "I may feel tired tomorrow. I've handled tired days before. One night does not decide my week."
8. Rate your belief again. Even a small drop is progress.

These steps use the same method as our CBT lesson on testing your thoughts, applied to sleep.

Stop trying so hard to sleep

Sleep is not something you can force. People with insomnia often try harder and harder, which raises frustration and keeps them awake.⁵ Strict sleep rules and targets can do the same.⁴

Instead, aim to rest quietly and let sleep come when it does. If you are awake, frustrated, and it has been a while, get up and do something calm, as in lesson 3. A relaxed body also helps a quiet mind. Try muscle relaxation or the cyclic sigh.

Notes for older adults

Sleep often changes in later life. CDC says adults 65 and older generally need 7 to 8 hours a night.⁸ Waking during the night is common at any age and is not a sign that something is badly wrong.⁷

Pain, medicines, low mood, and other health conditions can also affect how you feel by day. Do not blame everything on sleep. Tell your doctor about new memory problems or heavy daytime sleepiness. For more, see sleep in later life.

Common problems

I forgot my worry time, or it felt silly.

That is normal at first. Set a phone alarm, and give it a week or two.

Worry time makes me more anxious.

Keep it short and end with a calming activity. Focus on writing next steps, not on going over the same fears. If worry fills most of your day, read about generalized anxiety and talk with a clinician.

I know my thought is not true, but it still feels true at night.

That is very common. Thoughts feel bigger in the dark. Use your one sentence, then let the thought be there without arguing. Our ACT lesson on unhooking from thoughts may also help.

My worries are about real problems, like money or a sick family member.

Worry time still helps. It gives real problems your full attention at a better hour. See coping skills that work for problem-solving ideas.

Next step

In lesson 5: wind-down and staying on track, you will build a calming pre-bed routine and a plan for bad nights. You can also go back to lesson 3 or the CBT-I overview.

When to get more help

Long-term insomnia is linked to anxiety, depression, and thoughts of suicide.⁹ If worry or low mood is getting worse, talk with your doctor or a therapist. See sleep, mood and anxiety.

If you have thoughts of suicide, call or text 988 any time. If someone is in danger right now, call 911.

Education only. This page is general information written from the sources listed. It is not medical, legal or financial advice and does not replace a doctor, therapist or lawyer who knows your situation. How we write and check pages.