Time Blocking
Decide when each task happens, not just whether. Who it suits, why it usually collapses, and how the Time Blocking kit sets up your day.
A task list says what you intend to do. Time blocking says when. This page covers the method, who it suits, and how the Time Blocking kit arranges Finalist around it.
What it is
Take the day's hours and assign work to them, the way meetings already are. Deep work from 9 to 11. Email at 2. Errands after 4. The plan stops being a list you hope to get through and becomes a schedule you follow, and the schedule can't lie: once the blocks fill the day, the day is full, no matter how the list feels.
Writers on deep work have made the method famous, but the appeal is old and practical. A list of twenty tasks and a six-hour day can coexist peacefully forever. Draw those tasks on a clock and the overcommitment turns visible before it happens instead of after.
Whose brain it fits
Time blocking suits people whose calendars are already busy: when meetings claim half the day, the other half needs defending, and a named block ("Deep work 9 to 11") is easier to defend than a vague intention. It suits deep workers who need long unbroken stretches, and it suits anyone whose list keeps promising more than their hours can hold.
It also pairs well with an honest morning look at the day. If you've read One Day at a Time, time blocking is the same idea pushed one level down: the day has edges, and so does each hour.
It fits less well if your work is genuinely interrupt-driven. A day of support tickets or a toddler's schedule will shred any block plan by mid-morning, and rebuilding the plan hourly costs more than it returns. A short ranked list (Ivy Lee) survives chaos better than a schedule does.
Why it usually fails
Over-scheduling, mostly. The first attempt blocks every minute, the first disruption knocks the whole day sideways, and the method gets blamed for the collision it merely revealed. Blocks work as pencil marks, not promises: when a block breaks, you redraw it and move on. The other failure is blocking time for tasks that never earned a spot on the day at all; blocking works downstream of choosing.
The useful core
Two ideas survive even if you never block a full day again. Estimating forces honesty: to give a task an hour you have to admit how long it takes. And collision is information: when two things want the same 2pm, you've learned something a list would have hidden until dinner.
How the kit sets it up
Open Customize at the bottom of the Daily tab and find Time Blocking under Ways to Plan. The kit arranges the page around the schedule (All Day and the timed sections up front, with morning, afternoon, and evening day sections marking the hours), keeps To Dos as the staging area for whatever isn't placed yet, and opens Daily on the Timeline, the hour grid where blocking happens: drag a task onto an hour to block it, and drag its bottom handle to size the block.
Plan My Day is a natural companion; it pencils a proposed schedule around your meetings, and you keep or move the blocks. Your own arrangement stays protected as My setup. Tap Return to My setup on the desk in Customize to bring it back, even after trying other kits. Tasks you scheduled stay scheduled.
Related: Timeline & Time Blocking · Plan My Day · The Ivy Lee Method