Every time I’m about to leave for a trip, I do something my colleagues find a bit odd. The evening before, or a few hours before closing my laptop, I open a note and start writing. Not the packing list. I write down everything I’m working on: half-finished projects, emails I need to reply to, that bug I was chasing, the idea that came to me in the shower that I haven’t fleshed out yet, the conversation I need to have with a colleague when I get back. All of it.
This isn’t some obsessive need for order. After years of vacations ruined by that constant background hum of “what am I forgetting?”, I figured out the real problem. The problem isn’t leaving. It’s that your head doesn’t leave with you. It stays at the office, clinging to all those loose threads.
That note became my way of telling my brain: “Relax, it’s all written down. When you’re back, you’ll pick up right where you left off.” And it works. Since I started doing this, vacations have actually felt like vacations.
For years I thought this was just a quirk of mine. Then I found out there’s a whole body of scientific research behind it. Following the few I found, read, and used to write this blog post.
Why your brain won’t switch off (and what a 1920s waiter has to do with it)
The first surprise came when I stumbled on the Zeigarnik effect. In 1927, psychologist Bluma Zeigarnik demonstrated that we remember interrupted tasks better than completed ones. The discovery started noticing that waiters at a Vienna restaurant could recall unpaid orders perfectly but forgot the settled ones within minutes.
The mechanism is pretty simple. Starting a task creates a kind of cognitive tension, an open loop in the mind that stays active until the task is done. Think of it as having twenty browser tabs open in your brain: each one uses resources, even when you’re not looking at it.
That’s why, the night before a trip, your mind keeps churning. It’s not anxiety or perfectionism. It’s your brain doing its job: keeping every open loop active, because as far as it’s concerned, those tasks aren’t finished. And unfinished means front and center.
You don’t need to finish everything, you just need a plan
This is the finding that really got me. In 2011, researchers Masicampo and Baumeister published a study with a telling title: “Consider it done! Plan making can eliminate the cognitive effects of unfulfilled goals.” Across five experiments, they showed that you don’t need to complete a task to free your mind from its grip. You just need a concrete plan for when you’ll deal with it.
Participants with unmet goals experienced intrusive thoughts during completely unrelated activities. But those who had written down a specific plan for those tasks? The intrusive thoughts went away. The brain, once handed a credible plan, suspended the tension. As if it said: “OK, there’s a plan. I can let go.”
That’s what happens when I write my pre-trip note. I’m not finishing anything. I’m writing: “Monday the 27th I’ll pick this up, Wednesday I’ll send that email, Thursday I’ll talk to Marco about the project.” And the brain, oddly enough, trusts me.
This connects to Peter Gollwitzer’s work on implementation intentions, going back to 1999. Gollwitzer studies the power of plans framed as “when X happens, I will do Y.” Writing “I need to follow up with the client” does nothing. Writing “Monday morning, as soon as I open my laptop, I’ll email the client with the revised proposal” creates what Gollwitzer calls “strategic automaticity”: the brain delegates behavioral control to a future environmental cue. You’ve programmed a biological reminder.
Your brain wasn’t built to be a warehouse
Researchers call what happens when you write everything down cognitive offloading. Risko and Gilbert, in a 2016 review in Trends in Cognitive Sciences, define it as using physical actions to reduce the cognitive demands of a task. Writing a list, setting a reminder, placing an object somewhere visible — these are ways of telling your brain “you don’t have to remember this, the external world has it covered.”
David Allen, in Getting Things Done, popularized the same idea: “open loops.” Every commitment your mind has accepted but hasn’t organized is an open loop that drains mental energy. His line: “Your mind is for having ideas, not holding them.”
When I write my pre-trip note, I’m closing dozens of open loops at once. I’m not solving them. I’m transferring them to an external system I trust. And that transfer is enough.
Research on expressive writing backs this up. Klein and Boals, in 2001, showed that writing about your thoughts and concerns increases working memory capacity — cognitive resources previously tied up by intrusive thoughts get freed. My note isn’t an emotional journal, but the principle holds. Getting things out of your head and onto paper makes the head lighter.
Writing to sleep, writing to leave
There’s a 2018 study by Scullin and colleagues that I keep coming back to. They used polysomnography (sensors that record brain activity) to measure the effect of writing before bed. People who wrote a to-do list of future tasks fell asleep significantly faster than those who wrote about activities they’d already completed. And the more specific the list, the quicker they fell asleep.
The same mechanism that helps you fall asleep is the one that helps you switch off before a trip. In both cases, you’re telling your brain: “There’s a safe place where all this is stored. You can let go.” And the brain listens.
Why this matters more than you’d think
You might write this off as a comfort thing, a little trick to feel better. But the research on psychological recovery says otherwise. Sabine Sonnentag and Charlotte Fritz, in studies starting in 2007, identified four experiences that drive recovery from work: psychological detachment, relaxation, mastery, and a sense of control. Of those, psychological detachment (the ability to mentally disconnect) is the strongest predictor of recovery quality.
My pre-trip note, seen this way, does two things. It lets me actually disconnect during the trip, so I recover better. And it gives me a structured re-entry point when I’m back, so I spend less time trying to remember where I left things. Better rest, faster restart.
Conclusions
What I’d considered a small personal habit turned out to be backed by close to a century of research
If you want to try it, here’s what to do before your next trip:
- Open a note and write everything down: ongoing projects, pending emails, undeveloped ideas, conversations to have. Don’t filter, don’t organize, just get it all out.
- Add a “when” for each item. Not a vague “next week,” but “Tuesday morning” or “first day back, after lunch.” Specificity is what convinces the brain to let go.
- Trust the system. The note only works if you believe in it. When you read it on your return, you’ll find that your past self left you a map. Follow it.
Then close the laptop and leave. Your brain will figure out the rest.