Mind like water: capture everything
Your brain is built for having ideas, not for storing them. That is David Allen's starting point: every task, promise, or project kept in your head forms an "open loop" that consumes attention and generates stress. The solution is to capture 100% of your commitments in a trusted external system: a notebook, an app, or an in-tray, it does not matter which, as long as you empty it regularly.
Once your mind is unloaded, you reach the state David Allen calls "mind like water": like a pond that responds in proportion to the pebble thrown into it, you respond to each demand without being overwhelmed, then return to calm.
Write down everything that crosses your mind in an external system: your brain is for thinking, not for remembering.
Next action and the 2-minute rule
Capturing is not enough: you have to clarify. For every item in your inbox, David Allen asks one decisive question: "what's the next action?", meaning the next physical, visible step that moves the matter forward. "Organize the vacation" is not an action; "call the rental agency to check availability" is.
This is where the book's most famous rule comes in: if an action takes less than 2 minutes, do it immediately. Filing it for later would cost more effort than doing it right away. Otherwise, delegate it or put it on a next-actions list, sorted by context: phone, computer, errands.
Turn every vague task into a concrete action, and do anything that takes less than 2 minutes on the spot.
The weekly review, the keystone
An organization system only works if your brain trusts it. And that trust erodes as soon as your lists go stale. David Allen therefore imposes a non-negotiable ritual: the weekly review. One to two hours, every week, to empty your inboxes, update your project and next-action lists, and check your deadlines.
This review is what separates GTD practitioners who last from those who give up. It gives you back a complete overview of all your commitments and lets you choose your priorities with a clear head, instead of being ruled by the urgency of the moment.
Block a slot in your calendar every week to bring your system up to date: it is what guarantees everything else.
The covers shown differ from the original editions for rights reasons. The summaries are faithfully based on the works.
