# Can’t stop overthinking at night? Stop trying to: the 15-minute move at 7 p.m., and the word game that switches your brain off

> To stop overthinking at night, stop fighting the thoughts: give them a slot earlier in the evening, then give your brain a dull job in bed. 4 moves.

Category: Practical. Published 2026-11-02, updated 2026-11-02.
About 6 minutes to read. URL: https://www.memorypilot.fr/en/blog/how-to-stop-overthinking-at-night

To stop overthinking at night, **stop trying to stop**. Pushing a thought away makes it come back louder. What works is giving your thoughts somewhere to go earlier in the evening, and giving your brain a harmless, boring job once you’re in bed.

You know the scene. Lights off, phone down, finally. And then: the email you sent at 5 p.m., the thing you said at dinner, the form due Thursday, the dentist you still haven’t called, that awkward moment from 2014. It’s 12:40. You’re more awake than you were at noon.

## Why do I overthink more at night?

Because at night, nothing else is competing for your attention. During the day, tasks, people and screens keep your mind busy. In the dark, the only things left are the **unfinished ones**, and your brain brings them back so you don’t drop them.

It’s a reminder system. In a 2011 series of experiments, unfinished goals kept popping into people’s minds and got in the way of other tasks, until they made a specific plan for them. The plan alone was enough to quiet them, even before anything was done ([Masicampo and Baumeister, 2011](https://doi.org/10.1037/a0024192)). Your brain isn’t replaying the dentist to torture you. It’s afraid you’ll forget.

![A bedside alarm clock with a glowing green display, the only light in a dark room.](https://www.memorypilot.fr/img/article/reveil-dans-le-noir.webp)

*At night, the clock and your to-do list are the only things still lit up. (arvind grover from New York City, USA, CC BY-SA 2.0, via Wikimedia Commons)*

## Why “just stop thinking about it” makes it worse

Trying not to think about something keeps it on your mind. In a famous 1987 experiment, Daniel Wegner asked people **not** to think about a white bear for five minutes, and to ring a bell whenever it came up. They kept ringing. Worse: once they were allowed to think about it, they thought about the bear even more than people who had been asked to think about it from the start ([Wegner and colleagues, 1987](https://doi.org/10.1037/0022-3514.53.1.5)).

**Try it now**

For the next ten seconds, do **not** think about a white bear. That’s what you do every night with the email, the bill and the awkward sentence: you guard the door, so they keep knocking.

## How to stop overthinking at night: 4 moves

### 1. Worry on purpose, at 7 p.m., for 15 minutes

Early in the evening, take a sheet of paper and draw two columns. On the left, what’s bothering you. On the right, **the very next step** for each one, even a tiny one (“text Sam to ask”), or “nothing I can do tonight.” Then fold the sheet and put it away.

Sleep researcher Colleen Carney called this **constructive worry**. In [her study at Louisiana State University](https://repository.lsu.edu/gradschool_dissertations/564), students who slept badly did it in the early evening: at bedtime, their minds were measurably less busy than in the comparison group. Honest detail: their sleep diaries barely moved. It calms the noise, nothing more.

### 2. When a thought comes back, give it an appointment

A thought that shows up at midnight doesn’t need to be solved, it needs a slot. Say to yourself: “**Noted. Tomorrow, 6 p.m.**” That’s worry postponement, sometimes called **worry time**. In a 2013 trial, people who worried a lot kept a daily 30-minute worry period, same time, same place, for two weeks; compared with a control group, their worry and their sleep complaints dropped ([McGowan and Behar, 2013](https://doi.org/10.1177/0145445512455661)).

### 3. Get tomorrow out of your head

Before bed, write tomorrow’s to-do list. In a 2018 sleep-lab study, people who spent five minutes writing it fell asleep faster than people who wrote about what they had already done, and **the more specific the list, the faster they fell asleep** ([Scullin and colleagues, 2018](https://doi.org/10.1037/xge0000374)). Not “admin”: “call the dentist at 9, ask for a Tuesday.” Our guide to the [brain dump](https://www.memorypilot.fr/en/blog/brain-dump) shows how to do it in five minutes.

If what keeps you up is the fear of forgetting, hand it over. With [MemoryPilot](https://www.memorypilot.fr/en), you say “call the dentist tomorrow morning” in your own words, and it’s there when you wake up. Your brain can stop rehearsing it.

### 4. In bed, give your brain a dull job

An empty mind fills itself with worries. A mind busy with harmless pictures doesn’t. In a 2002 Oxford study of people who struggled to fall asleep, those asked to picture an absorbing, pleasant scene in detail fell asleep faster than those told to distract themselves however they liked ([Harvey and Payne, 2002](https://doi.org/10.1016/S0005-7967%2801%2900012-2)). A walk through a house you know, room by room, works.

## The surprise: the cognitive shuffle, and what science really says

The **cognitive shuffle** is the sleep method all over TikTok, and it was invented by a cognitive scientist, Luc Beaudoin, at Simon Fraser University in Canada. Here’s how it works:

- Pick a calm word with no emotional charge, like **BLANKET**.
- Take its first letter, B, and think of words that start with it: bread, bicycle, beach, balloon.
- For each one, **picture it** for a few seconds. Then the next. When B runs dry, move on to L.

Why it works, in Beaudoin’s theory: when you fall asleep, your thoughts naturally break into random, disconnected images. A shuffle of unrelated pictures imitates that state and tells your brain “nothing to solve here.” In a [study presented at the SLEEP 2016 conference](https://summit.sfu.ca/_flysystem/fedora/sfu_migrate/16196/2016-06-06%201_23%20PM%20SLEEP%202016-06%20Beaudoin%2C%20Digdon%20et%20al%20Denver.graffle.pdf), 154 students with a busy mind at bedtime tried it: it calmed their pre-sleep thoughts **as well as the evening worry exercise** (move 1), with one advantage, you can do it in bed.

The honest part: that’s one study, on students, by the method’s inventor (who also builds apps around it). Do the evening moves first, and keep the shuffle for when your head starts looping in the dark.

Staying up to win back your evening is a different problem: [revenge bedtime procrastination](https://www.memorypilot.fr/en/blog/revenge-bedtime-procrastination). And if your head is full because you carry [the mental load](https://www.memorypilot.fr/en/blog/mental-load) of a household, sharing it helps more than any list.

One last thing. If your thoughts keep you awake most nights for weeks, if they are dark, or if you feel exhausted during the day, talk to your doctor.

## Frequently asked questions

### Why do I overthink more at night?

Because nothing else competes for your attention. In the dark, only unfinished business is left, and your brain brings it back so you don’t forget it. Research shows unfinished goals keep intruding until you make a specific plan for them.

### How do I stop overthinking at night when trying to sleep?

Don’t try to push thoughts away: that makes them come back. Write your worries and a next step for each early in the evening, write tomorrow’s to-do list before bed, and when a thought returns, give it a slot (“tomorrow, 6 p.m.”). In bed, picture calm, unrelated images to keep your mind busy.

### What is the cognitive shuffle sleep method?

It’s a technique created by cognitive scientist Luc Beaudoin: pick a neutral word, then for each letter think of words starting with it and picture each one for a few seconds. The random images imitate how thoughts break up as you fall asleep. One 2016 study found it calmed pre-sleep thinking.