A brain dump is exactly what it sounds like: you write down everything that is taking up space in your head, without sorting or judging it, and only then decide what to do with it. It takes about fifteen minutes, needs nothing more than a pen or a notes app, and is one of the fastest ways to go from “I have too much to do” to “I know what to do next”.
Why writing it down works
Your working memory is small. Psychologists have argued for decades about its exact capacity, but everyone agrees it is limited to a handful of items at once. When you try to hold a dozen commitments in your head (call the bank, reply to the landlord, finish the proposal, buy a birthday present) you spend attention just keeping them from slipping away.
Two findings are worth knowing. Bluma Zeigarnik noticed in the 1920s that unfinished tasks stay more active in memory than finished ones. And in 2011, E. J. Masicampo and Roy Baumeister published experiments showing that unfinished goals interfered with people's concentration on other tasks, but that the interference largely disappeared once people made a specific plan for the goal, even without completing it. Writing a task down with a next step is that kind of plan. It is why a brain dump often brings relief before you have done anything on the list.
David Allen's Getting Things Done method, first published in 2001, builds on the same idea with its “capture” step: get every open loop out of your head and into a trusted system you will actually review.
The 15-minute brain dump
- Set a timer for ten minutes. A limit stops you from overthinking and makes it feel manageable.
- Write everything, one item per line. Tasks, worries, ideas, errands, things you're waiting on, half-formed plans. Don't sort, don't fix spelling, don't decide whether it matters yet.
- Keep going when you slow down. The first few minutes produce the obvious items. The useful ones often surface in minutes six to ten. Use the prompts below if you stall.
- Spend the last five minutes sorting. This is where the dump becomes a plan. The sorting section explains how.
Format doesn't matter much, but writing each line the way you'd say it (“call Sarah about the renewal”, “$500 invoice to Acme”) makes sorting easier. If you dump into the free Action Item Extractor, it will separate tasks, appointments, money and people as you type, which covers most of the sorting step for you.
Trigger prompts when you go blank
Run through these areas quickly. You don't need to answer each one, just notice whether something comes up.
- Work: projects in progress, emails you owe, meetings to prepare for, people waiting on you, people you're waiting on.
- Money: bills due, invoices to send or chase, subscriptions to cancel, refunds you expect, taxes and filings.
- Home: repairs, groceries, appointments, paperwork, things to return.
- People: calls to return, birthdays, favours, messages you've left on read.
- Health: check-ups, prescriptions, exercise plans you keep postponing.
- Someday: ideas, courses, trips, side projects. Write them down so they stop competing with today.
Sorting the dump
Go through each line once and give it one of five labels. Don't agonise; the first instinct is usually right.
| Label | What it means | What to do |
|---|---|---|
| Do | A task you can do in one sitting | Rewrite it starting with a verb and add a date if it has one |
| Schedule | Tied to a specific day or time | Put it in your calendar now |
| Delegate or chase | Someone else needs to act | Send the message, or note who and when to follow up |
| Project | Needs more than one step | Write only the very next step as a task |
| Park | An idea or someday item | Move it to a separate ideas list |
Then circle three “Do” items for today. Three is deliberate. It is enough to make real progress and few enough that you are likely to finish them, which is what builds trust in the system.
Anything you can do in under two minutes (another idea from Getting Things Done) is often worth doing immediately rather than writing down, as long as it doesn't derail the dump.
Making it a habit
- Daily mini-dump. Two or three minutes at the end of the workday: whatever is still on your mind, written down. Many people find it helps them switch off in the evening.
- Weekly full dump. Part of a weekly review, using the trigger prompts above.
- After heavy meetings. Dump your raw notes straight away, then sort. It is faster than trying to write neat minutes from memory later. The minutes guide shows what to pull out.
- Keep one inbox. Dump into the same place each time. Scattering lists across five apps recreates the problem you were trying to solve.
A brain dump is the capture step of a bigger idea: a trusted external system that remembers for you. If you want to take it further, read how to build a second brain without turning it into a weekend hobby.
Keep reading
- How to build a second brain without spending your weekends on itA plain-English guide to the second brain idea: what to capture, the minimum structure you need, and how to keep it useful instead of turning it into a hobby.
- The 30-minute weekly review: a checklist so nothing slipsA realistic weekly review you can finish in half an hour: clear the inboxes, check every open loop, and pick the three things that matter next week.
- How to write action items people actually finishA practical format for action items with an owner, a verb and a date — plus 12 before-and-after examples and the mistakes that make tasks die after a meeting.