Getting Things Done (GTD)
Definition
Getting Things Done (GTD) is David Allen's productivity method, introduced in his 2001 book of the same name. The core principle: a clear mind requires moving every commitment out of memory and into a trusted external system. The method has five steps — capture, clarify, organize, reflect, engage — and remains one of the most influential personal productivity frameworks in the world.
The five steps
GTD’s method has five stages applied in order:
- Capture — write down every commitment, idea, and open loop as it appears. The mind shouldn’t be holding any of them.
- Clarify — for each captured item, decide: is it actionable? If yes, what’s the next physical action? If no, file as reference, defer, or discard.
- Organize — actionable items go into the right list (next actions, projects, waiting-for, someday/maybe). Reference goes to a filing system.
- Reflect — review the lists weekly to keep them current and trusted.
- Engage — work from the lists based on context, time available, energy, and priority.
The five steps form a continuous loop, not a one-time setup.
The “trusted system” principle
GTD’s foundational insight: the brain is bad at holding open loops. Unresolved commitments create background cognitive load that drains attention even when you’re not actively thinking about them. The brain only releases the load when it trusts that the commitment is captured somewhere it will see again.
Without a trusted system, your brain runs as if everything could be forgotten — because it could. With one, the brain releases the mental tabs.
This is the psychological mechanism that makes GTD work, beyond the specific lists and rituals.
The weekly review
GTD’s weekly review is the single most-cited and most-skipped practice. Allen describes it as 1-2 hours per week of: clearing inboxes, reviewing all project lists, processing the someday/maybe list, planning the week ahead.
Practitioners who do the weekly review report GTD works. Practitioners who skip it report GTD doesn’t work. The review is what keeps the trusted system trusted.
Why GTD fails for most people
Three common failure modes:
- The setup tax is high. Building the system (inboxes, project lists, contexts, filing) takes hours before any value flows.
- The weekly review is brittle. A skipped review compounds; two skipped reviews and the system becomes untrusted.
- Email volume exceeds GTD’s tolerance. The method assumes you can process every incoming item; modern email volume makes that impossible without help.
The third reason is why AI email triage tools and GTD interact well. AI handles the volume that GTD can’t.
GTD and AI assistants
AI email assistants like alfred_ automate two of the most expensive GTD steps:
- Capture — every email is automatically considered for tasks; commitments don’t require manual capture
- Clarify — the AI determines actionable vs reference, assigns next actions, files appropriately
The user runs the higher-level loop (organize, reflect, engage) on a much smaller surface area. GTD’s weekly review becomes feasible when the daily processing load is 30 minutes instead of 3 hours.
Where alfred_ fits
alfred_ is structurally compatible with GTD. It captures commitments from email automatically, drafts replies for items needing response (the “next action” for many email items), and surfaces a Daily Brief that supports the engage step. Users can run a weekly review against alfred_’s task list and follow-up tracking rather than building separate GTD infrastructure.
What GTD isn’t
It isn’t a software product — it’s a method. Many tools claim GTD compatibility (Todoist, Things, OmniFocus); the method works in any tool that supports lists and contexts. It also isn’t dogmatic — Allen explicitly designs the method to adapt to the practitioner’s actual workflow. And it isn’t quick to learn; most practitioners take months to settle the discipline.