For many people, bedtime is when unfinished tasks suddenly become impossible to ignore. Emails that need replies, meetings that require preparation and appointments that have not yet been scheduled can race through the mind just as a person is trying to fall asleep.
Sleep experts say one simple habit may help: writing down the next day’s tasks before going to bed.
Dr. M. Taruj Ali, medical director of sleep medicine at Mary Washington Healthcare in Fredericksburg, Virginia, said patients with insomnia frequently tell him they are physically exhausted but unable to stop thinking. Their minds often run through unfinished responsibilities and plans for the following day.
Putting those thoughts on paper can help create a mental boundary between the day that has ended and the tasks that can wait until tomorrow.
Experts recommend spending about five to 10 minutes on the exercise during the evening, preferably after finishing work, household chores or other structured activities. Writing the list immediately before getting into bed may keep the brain focused on planning when it should be preparing for sleep.
Research offers some support for the approach. A small 2018 study involving 57 healthy adults found that participants who spent five minutes writing down tasks they needed to complete in the coming days fell asleep about nine minutes faster than those who wrote about tasks they had already completed. Participants who created more detailed task lists tended to fall asleep faster.
The findings do not establish that making a to-do list can treat insomnia. The study involved young, healthy adults and examined only one night in a sleep laboratory. Researchers also noted that the results might not apply to people with diagnosed sleep problems.
The technique is known as cognitive offloading, in which information is moved from the mind to an external record. Stephanie High, a psychology doctoral candidate in Spokane, Washington, compares unresolved tasks to browser tabs operating in the background. Writing them down allows people to acknowledge the responsibility without continuing to mentally rehearse it.
A useful approach is to begin with a complete brain dump, then reduce the next day’s plan to three main priorities. Those priorities should be checked against the calendar so the schedule remains realistic.
Specific wording can also help. Instead of writing “prepare for meeting,” a person might note “pull Q3 numbers and email the presentation.” Clear instructions reduce the need to remember what a vague task involves.
The method does not need to be elaborate. A notebook, paper or phone notes app can work. What matters is choosing a system that feels easy to maintain.
Experts also warn against turning the practice into another source of pressure. The purpose is to clear mental space, not create a list of everything that went wrong during the day.
If another task comes to mind after going to bed, it can be briefly written down and left until morning. The goal is to record the thought, not start working on it.
Trying the technique for several days can help people determine whether it leaves them calmer at night and more focused when they wake up. If it becomes another obligation, experts suggest changing the approach or abandoning it.
