Set a timer for ten minutes, read until it rings, and give yourself full permission to stop there. That is the whole technique. Everything below is about why the number is so small.
Starting is the expensive part
An hour of reading is not one hour of difficulty; it is one hard moment of starting followed by an hour that mostly takes care of itself. Shrinking the session does not make reading easier — it makes starting cheaper, which is the part you keep failing at. Ten minutes is short enough that the excuse machine has nothing to work with. No tiredness argument survives ten minutes.
Why the hard stop matters
Most people misread the timer as a minimum. It is a ceiling with a door in it. Ending a session while you still want more leaves the momentum pointing at tomorrow instead of burning it tonight. Read for an hour if the book has you — but the permission to stop is what keeps the habit cheap, and any session you finish resenting will cost you the next three.
Sizing the sprint
Grow the interval only after ten minutes has become boringly automatic, and grow it in small steps: twelve, fifteen, twenty. The moment you start skipping sessions, shrink it again without negotiating. Pomodoro's 25 minutes works for people it works for; there is nothing magical about it, and treating it as the standard is how a lot of readers conclude they cannot focus when really they picked the wrong interval.
Stack it against a cue you already have
Sprints stick when they attach to something automatic: the kettle, the train, the ten minutes after you sit down with coffee, the walk to the shop with an audiobook. Habit building →
Practical setup
Use a physical timer or a smart speaker rather than your phone, because unlocking a phone to start a reading session is a coin flip you will lose. Have the book already open and physically present before the sprint starts — no fetching, no choosing. Choosing what to read counts as a separate task, and it belongs outside the ten minutes.
Sprints for difficult material
For a textbook or a dense argument, run the sprint and then take sixty seconds at the end to write one sentence about what you just read. It costs almost nothing, and it converts a session you would forget into one you can build on. Remember what you read →
When sprints are not the answer
If you are stalling on every book regardless of session length, the problem is the book or the format, not the clock. Quit it → or switch to ears plus eyes →