Close browser tabs, apps, and documents between tasks

Close everything related to the previous task before starting the next — visual remnants sustain residue.

Why it works

Open tabs and files are visual cues that maintain activation of the previous task’s context. The brain uses environmental cues as external working memory — open tabs serve as reminders that keep the previous task partially active. Closing them removes the environmental residue, complementing the cognitive residue reduction of reaching a stopping point. This is environment design applied at the task-switching level.

How to do it

1. When a task block ends, close all tabs, windows, and documents associated with it.
2. Save the session state first if returning: a brief note, a bookmark group, or a saved workspace.
3. Open only what the new task requires — this is a physical reset that signals a cognitive reset.
4. If your workflow requires rapid switching (support roles, reactive work), use separate browser profiles or virtual desktops per context.

Evidence

Environmental design research (Thaler & Sunstein, nudge theory; Wood et al., habit context cues) shows that contextual cues automatically activate associated behaviors and thoughts. Closing previous-task cues removes environmental activation of that task’s residue. (mechanistic)

The cue-based residue mechanism is well established in habit research; its specific application to browser tabs and screen environment is a practitioner extension of the principle.

Common mistake

Keeping 25 tabs open "to remember where you were" — which maintains low-level activation of all those contexts simultaneously, fragmenting attention across all of them.