Getting Things Done

Allen's claim is that stress comes not from having too much to do, but from keeping track of it in your head instead of in a trusted system. An open commitment — a phone call you haven't returned, a decision you haven't made — costs mental energy just by sitting there unresolved, whether you are working on it or not.

The system underneath that claim is five steps: capture everything into an inbox, clarify what each item actually requires, organize it into lists and a calendar, review it on a fixed weekly schedule, and engage with it by context — the calls list, the errands list, whatever you can act on where you are. The two-minute rule cuts the smallest layer off the top: if a task takes less time to do than to write down, it gets done immediately instead. Allen's name for the target state is 'mind like water,' a martial-arts image for a mind that responds in proportion to what hits it and then goes quiet again.

It is written for people whose work is mostly self-directed knowledge work — email, projects, meetings — and it says almost nothing about managing other people's time or hands-on physical work. The honest cost is upkeep: the weekly review is the load-bearing habit in the whole system, and the book is far more persuasive about why to do it than about how to keep doing it once the novelty wears off.