Rebuild focus stamina gradually

Train sustained single-task attention in increasing blocks, like a muscle.

Why it works

Sustained attention is a trainable capacity, and chronic switching keeps it weak by never demanding long unbroken focus. Gradually extending the length of single-task blocks lets your tolerance for sustained effort grow, so longer monotasking sessions stop feeling aversive.

How to do it

1. Start with a block length you can hold without switching (even 15 minutes) and protect it fully.
2. Extend the block by small increments as it gets comfortable.
3. When the urge to switch hits, note it and stay — the urge usually passes within a minute.

Evidence

Attention and self-regulation behave as trainable capacities that strengthen with practice and graded challenge; this aligns with attention-training and effort-tolerance research. (mechanistic)

The "attention as muscle" framing is a useful metaphor with mechanistic support; precise training curves are individual and not standardized.

Common mistake

Trying to jump straight to multi-hour deep work, failing, and concluding you "can’t focus" rather than building the block length up gradually.