Why writing it down actually does something
This sounds too simple to matter, so it is worth explaining the mechanism.
Your brain keeps unresolved matters active. Something that feels unfinished gets re-surfaced periodically, which is useful when it prompts you to act and useless at midnight when you cannot. Writing it down appears to satisfy part of that process: the item now exists somewhere other than your memory, so the need to keep rehearsing it drops.
There is a second effect that is arguably more valuable. Worries held in your head are vague and therefore unlimited. Written down, they become specific and finite. “Everything at work is falling apart” becomes “I have not replied to Sam, and I am unsure about Thursday’s numbers.” That is a much smaller object, and a much more manageable one.
The format
When and where
Early evening — around two hours before bed — and not in the bedroom. Kitchen table, sofa, anywhere that is not where you sleep. Doing this in bed strengthens exactly the association you want to weaken.
How
Set a timer for five minutes. Paper, not a screen — a phone hands you everything else on the phone. Draw one line down the middle of the page.
Left column: what is on my mind. One line each, no detail, no solving. Anything that has surfaced today. Trivial items count — the trivial ones are often what keeps you awake.
Right column: the genuine next action. Concrete and small. “Email Sam” — not “sort out the Sam situation.” And when there is nothing to do, write that explicitly: nothing until Monday, not mine to solve, no action, just unpleasant. Those entries matter as much as the actionable ones, because naming something as non-actionable is what gives you permission to stop working on it.
Then stop
Timer goes, pen down, close the notebook, leave it out of the bedroom. If a worry surfaces later you can tell yourself, honestly, that it is written down and has a place.
Three ways people get this wrong
Turning it into an essay. Long-form emotional writing has its place, but it is a different exercise and it tends to increase arousal. Keep this one short and mechanical.
Doing it in bed. Understandable, and it undermines the point. Move it earlier.
Skipping the right-hand column. Listing worries without assigning actions is just concentrated worrying. The second column is where the relief comes from.
If a worry still arrives at 2 a.m.
It will sometimes. Keep a single sheet by the bed and add the line there — still no solving, still no detail. Then move to something non-narrative; the cognitive shuffle works well for this, and the 3 a.m. rescue kit has the short version.
Sources
- National Institute of Mental Health — anxiety disorders: signs, symptoms and treatment options.
- American Academy of Sleep Medicine — clinical practice guidance on chronic insomnia and CBT-I as a first-line approach.
- Beaudoin, L. P. — serial diverse imagining (cognitive shuffle), including the 2016 pilot comparison with structured problem-solving in 154 students.