David Allen spent the 1990s coaching executives whose jobs had outgrown their memories, and in 2001 he published what he'd learned as Getting Things Done. The book has sold millions of copies and spawned a subculture of elaborate setups, which is ironic, because its core claim is one sentence: your mind is for having ideas, not holding them.
Everything in GTD follows from taking that sentence seriously. A brain asked to remember forty commitments does it badly and charges for the service in background anxiety (psychologists know the mechanism as the Zeigarnik effect: open loops keep intruding until they're captured somewhere trusted). So GTD's whole project is building that trusted somewhere, and keeping it trustworthy.
The five steps
- Capture. Everything that has your attention goes into a small number of inboxes: notes, email, a tray. Nothing lives in your head.
- Clarify. For each captured item: what is it, and is it actionable? If yes, what's the very next physical action? If under two minutes, do it now.
- Organize. Outcomes go to the right home: a next-actions list, a waiting-for list (what others owe you), the calendar, or reference files.
- Reflect. A weekly review keeps the lists current, which is what keeps them trusted. Allen calls this the critical success factor.
- Engage. Work from the lists, chosen by context and energy, not from memory or whatever shouted most recently.
The two rules worth stealing
Adopt nothing else and still take these: the two-minute rule (tiny actions get done at the door, because tracking them costs more than doing them) and the waiting-for list (every delegated task and unanswered request, written down with a date). The first keeps small stuff from clogging the system; the second is where dropped balls stop happening.
GTD in 2026 means GTD for email
Allen wrote the book when commitments arrived by phone, memo, and hallway. Today they arrive overwhelmingly by email, about 120 a day for the average professional, which makes the inbox both GTD's main arena and its main failure point: hand-clarifying at that volume is where most practices quietly die. The email mapping covers the full workflow, and the clarify step itself is now delegable: Pidgy reads a Gmail or Outlook inbox and sorts it into next actions, waiting-fors, and reference automatically, which removes the labor while keeping the method.
Complicated is optional. Two lists, a weekly half hour, and the habit of writing things down cover most of what the book promises.
