Tomorrow on your mind? Try a simple task list before bed

Give tomorrow a place outside your head

You turn out the light and remember an unanswered message, a form to return and something you promised to bring tomorrow. The practical question is whether writing those reminders down is worth trying before bed. A short task list is a reasonable, inexpensive option, but it is not a reliable switch for sleep. NHS guidance specifically suggests listing the next day's tasks when worries keep appearing in bed. ^[2]

The useful distinction is between recording a reminder and starting the work. A note can say where to begin tomorrow without requiring you to answer the message tonight. Think of the page as somewhere to leave a responsibility until an appropriate time, rather than another set of standards to meet before you are allowed to rest.

What the writing experiment actually tested

Scullin and colleagues randomly assigned 57 healthy adults aged 18–30 to write for five minutes about future tasks or recently completed activities. Researchers measured sleep with polysomnography: overnight recording of signals used to identify sleep stages. The future-task group fell asleep sooner than the completed-activity group. ^[1]

This was a small experiment on the first laboratory night, not a long-term home trial or a study of people with diagnosed insomnia. It also lacked a no-writing comparison, so it cannot establish whether future-task writing helped, completed-task writing hindered, or both contributed. The authors explicitly identified that uncertainty. Published online in 2017 and in a January 2018 issue, it is established research, not a new discovery. ^[1]

The practical implication is limited: writing may be worth exploring when unfinished tasks are your specific distraction. The study does not promise a particular result for you, and it does not establish that an elaborate journal is necessary.

Make the note useful to tomorrow's self

Start with an ordinary sheet of paper and whatever pen you already use. Choose a moment during your evening wind-down when you can put the page down afterward. NHS advice places task listing within a wider routine that also includes relaxation and managing worries. ^[2]

Here is a hypothetical example. Someone keeps thinking, “I must sort out the car.” On paper, they write, “After breakfast, find the garage number and ask about an appointment.” Another reminder, “School paperwork,” becomes, “Check the return date on the form after lunch.” These examples illustrate clearer reminders; this exact wording and scheduling method have not been tested as a sleep intervention.

You need enough information to recognise the task tomorrow, not a complete project plan. If a task belongs to another person, a reminder to ask them can be sufficient. If you cannot act until next week, write that down too. A page does not have to contain an immediate solution to everything that matters.

Know when a list has become another work session

A useful stopping point is when the reminders are understandable. Opening your inbox to research each item, rewriting the page for neatness or building a detailed schedule can turn the exercise into more evening work. Those are practical reasons to simplify the format, rather than evidence that a particular notebook design changes sleep.

If writing makes you feel more stirred up, you do not have to persist at bedtime. Consider leaving practical planning for an earlier part of the day and choosing a quieter evening activity. NHS guidance includes reading, breathing exercises and calming music as options; it also advises against trying to force sleep. ^[2]

Our guide to winding down when your mind is still at work explores the broader evening transition. For the place this might have in an ordinary day, see a sleep routine that fits a busy schedule.

Keep purchases out of the experiment

You do not need a dedicated sleep journal, subscription or new device to try leaving yourself a reminder. Reuse a notebook or the blank side of a sheet of paper. Put it somewhere you can find tomorrow without displaying private details to other people in a shared home.

No specific product is recommended here because a verified branded feature would add little to this simple task. Spending more would not establish a better sleep outcome. Your decision can be about convenience: can you read the reminder, find it again and stop working once it is written?

Check usefulness without grading the night

After trying it, ask a modest question: did the page make tomorrow's first step clearer, and was it easy to leave alone afterward? You can answer that without timing every minute awake or buying a sleep tracker. A difficult night does not prove you wrote the list incorrectly; a good night does not prove the list caused it.

For ongoing difficulty sleeping, a list is only a small lifestyle option. NHLBI describes cognitive behavioural therapy for insomnia, or CBT-I, as the usual first treatment option for long-term insomnia. That is a structured clinical approach, not the same thing as a task list. ^[3] If sleep problems keep affecting daily life, our guide to asking for sleep support can help you prepare a conversation with a qualified professional.

Before tonight, the practical checklist is short: use something you own, write recognisable reminders, leave the actual work for an appropriate time and stop if the exercise becomes another source of pressure. The aim is a manageable handover to tomorrow, with no requirement to achieve a perfect night.