Your Guide to the “Getting Things Done” (GTD) System

Your commitments are scattered across an email inbox, two notes apps, a paper notebook and your own memory, and none of them agree. Getting Things Done (GTD) fixes this by giving every commitment exactly one home outside your head, plus a fast, repeatable way to decide what to do next.

The method works when you run its five stages in order and keep the system current with a weekly review. This guide covers the decision rules, the list structure, the calendar rule most people get wrong, and a review checklist you can use this Friday.

Where GTD comes from and why it works

David Allen introduced the method in his 2001 book Getting Things Done: The Art of Stress-Free Productivity and revised it in 2015. The workflow has five stages: capture, clarify, organize, reflect and engage. Allen’s central claim is that anything you have committed to but not yet decided about stays in your head as an “open loop” that keeps pulling at your attention.

There is lab evidence for the mechanism. Masicampo and Baumeister found that unfinished goals produced intrusive thoughts and hurt performance on unrelated tasks, and that making a specific plan for the goal removed those effects without the goal being completed. That is the logic behind GTD’s insistence on defining the next physical action rather than just writing “budget” on a list.

That support is narrower than it sounds. Those studies used short lab tasks, and GTD as a complete system has not been tested in large controlled trials. The best-known academic treatment, by Heylighen and Vidal (2008), is a theoretical analysis rather than an experiment. What GTD has is sound reasoning and partial lab support for its core idea, not proof that the full system outperforms the alternatives.

Setting up GTD in five stages

Capture: fewer inboxes, emptied often

Collect every commitment, idea and request in as few places as possible: typically one physical tray, your email and one notes app. Capture without judging; deciding comes later. If you are starting from scratch, a full brain dump on paper is the fastest way to surface what is already stored in your head.

Clarify: run every item through the same questions

Clarifying means deciding what each item is and what, if anything, you will do about it. You are not doing the work yet. Ask: is it actionable? If yes, is it one step or several? If one step, will it take under two minutes? Allen’s two-minute rule says to do those immediately, because tracking them costs more than finishing them.

Organize: lists by context, not by topic

In GTD, a project is any outcome that needs more than one action and can be finished within about a year. The Projects list holds outcomes only; the actual work lives on Next Action lists sorted by where or how you can do it. David Allen explains that sorting next actions by context such as @Computer, @Calls and @Errands lets you see only what is possible in your current situation.

A typical set looks like this:

• @Computer: “Draft section 2 of the onboarding guide.”
• @Calls: “Call supplier about invoice 4471.”
• @Errands: “Pick up printer toner.”
• @Agendas: items to raise with a specific person at your next meeting.
• Waiting For: things others owe you, each with the date you asked.
• Someday/Maybe: ideas you are deliberately not committing to yet.

Reflect: keep the lists trustworthy

Daily, you glance at your calendar and action lists. Weekly, you do a full review that brings every list back in line with reality. The checklist at the end of this guide covers it step by step.

Engage: choose by context, time, energy, priority

When it is time to work, Allen’s model has you filter in a fixed order: context, time available, energy available, then priority. Priority comes last because it only matters among actions you can actually do right now. Longer-range priorities come from his Horizons of Focus, which run from current actions up through projects, areas of responsibility, goals, vision and purpose.

The calendar rule: hard landscape vs Next Action lists

This is the part of GTD most often blurred with other methods. Allen describes the calendar as sacred territory and recommends reserving it for the hard landscape: commitments that must happen at a specific time or on a specific day.

Three things belong there:

• Time-specific actions: meetings, appointments, calls booked for 10:00.
• Day-specific actions: things that must happen on a given day but at no particular time, such as filing a form due Tuesday.
• Day-specific information: a colleague’s leave, a client’s launch date.

Everything else goes on Next Action lists. The reasoning is practical: if you write “work on report” into Wednesday and the day blows up, you have to move it, and after a few weeks of moving entries you stop trusting anything on the calendar, including the meetings.

Consider a freelance Shopify store builder with two client projects. In strict GTD, the calendar shows only the 11:00 client call and Friday’s invoice deadline. “Set up shipping rates and run a test checkout on the bakery’s store” sits on @Computer, picked up whenever there is a free 90 minutes and enough energy.

If the same store builder prefers timeboxing, a hybrid works, as long as each block is kept as a non-negotiable appointment with yourself, like Cal Newport’s time-blocked days. The failure is the middle ground: blocks that are optional in practice but sit on the calendar anyway.

When to use GTD vs other systems

If your problem is choosing between important tasks rather than tracking them, the Eisenhower Matrix may be enough on its own.

Six habits that make GTD lists go stale

• Vague list items. “Website” or “Mom” is a reminder, not an action. Rewrite each as a visible verb: “Email the client the three hosting options.”
• Projects with no next action. A project with nothing on an action list will not move. During review, every active project gets at least one next action.
• Too many inboxes. Six capture points means six places to forget. Cut to three and route the rest, such as forwarding Slack messages to email.
• Everything is @Computer. For laptop-bound work, a single context filters nothing. Split by mode instead, for example @Deep and @Quick, or by tool.
• Email becomes the task list. Clarify messages into actions and archive them; a calm email workflow keeps the inbox a capture point only.
• Skipped reviews. Two missed weeks and the lists go stale, so your head takes the job back. Shorten the review before you skip it.

The GTD weekly review, condensed to five steps

The David Allen Company’s official Weekly Review checklist groups the review into getting clear, getting current and getting creative. Allen suggests Friday afternoon, while the week is still fresh. Condensed into five steps:

1. Collect and empty. Gather loose papers, receipts and notes. Clarify every inbox (tray, email, notes app) to zero using the table above.
2. Empty your head. Write down any new commitments, worries or ideas that surfaced this week, then clarify them too.
3. Check the calendar both ways. Scan the past two weeks for loose ends and follow-ups, then the next few weeks for preparation you need to capture.
4. Review action, Waiting For and Projects lists. Cross off what is done, chase overdue Waiting For items, and confirm each active project has a next action.
5. Look at Someday/Maybe. Promote anything now worth committing to, delete what no longer interests you, and add new ideas.

Run this five times before judging the system. By then your lists should hold everything you have committed to, and the main reward of GTD shows up: you can work on one thing without wondering what you are forgetting.