Practise short sessions frequently rather than long sessions rarely

Multiple shorter sessions build the habit neurologically more reliably than occasional long ones.

Why it works

The neural changes underlying attention training depend on repetition frequency, not just total duration. Short, frequent sessions maintain the habit cue structure (same time, same place, same cue) that makes meditation automatic, while long infrequent sessions are psychologically demanding, harder to sustain as a practice, and produce boom-bust patterns rather than stable development.

How to do it

1. Start with 10–15 minute sessions, twice a day if possible, rather than one 30-minute session.
2. Prioritise consistency over duration — five days a week at 10 minutes beats one day a week at 60 minutes.
3. Maintain the same time and place to build automatic cueing.
4. Gradually extend session length only after consistency is established.

Evidence

Habit formation research shows that consistency of time and place is more predictive of habit automaticity than episode duration. Distributed practice outperforms massed practice for skill acquisition generally. (mechanistic)

The specific session length and frequency recommendations are practitioner heuristics; optimal training parameters for shamatha have not been experimentally studied.

Sources

• Lally et al. (2010), How are habits formed, European Journal of Social Psychology

Common mistake

Doing one long session to "make up" for missed days — this produces exhaustion and irregular habits rather than the gradual, accumulated stability that shamatha develops.