Protect the ramp-up time

Allow uninterrupted blocks long enough for flow to actually emerge.

Why it works

Flow does not appear instantly; the deep concentration it requires takes time to build, and short fragmented blocks never reach it. Protecting longer uninterrupted windows gives absorption room to develop past the effortful early phase into the effortless state.

How to do it

1. Schedule focus blocks long enough to get past the slow start (often well beyond 15 minutes).
2. Front-load the session with a consistent ritual that signals "deep work begins now".
3. Resist judging the first minutes — the early friction is part of the ramp, not a failure.

Evidence

Practitioner and qualitative accounts describe a transition period before flow; this aligns with attention research on the time cost of reaching deep concentration. (anecdotal)

The specific length of the ramp-up is largely from practitioner reports (including Kotler’s) rather than controlled measurement; treat any exact "it takes X minutes" claim with skepticism.

Common mistake

Scheduling focus in slivers between meetings, so every session ends during the effortful ramp-up and flow is never reached.