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Lessons-Learned Repository Habit

After any task (not just major projects), one line: what lesson won't I forget? — accumulates into an actual wisdom library.

15 min Beginner

Goal

Extend the formal post-mortem library (adm-km-297, for major incidents) with a lighter daily habit capturing lessons from small ordinary tasks that don't merit a full post-mortem but carry cumulative wisdom.

Steps

1

At the end of each workday, dedicate just 3 minutes to: what's today's single most important lesson?

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Expected Outcome

Immediate

The first week builds 5 lines of lessons that would have evaporated from memory within days without immediate logging.

Evidence base

School: Reflective Practice / Lessons Learned

Founders: Donald Schön · US Army After-Action Review (1983)

Donald Schön in "The Reflective Practitioner" (1983) established the value of light daily reflection; the US Army's "After-Action Review" method proved short immediate documentation outperforms long delayed review.

Frequently asked questions

How long does "Lessons-Learned Repository Habit" take?

This exercise takes about 15 minutes, practiced solo in a Written reflection format.

When will I notice the effect of "Lessons-Learned Repository Habit"?

The first week builds 5 lines of lessons that would have evaporated from memory within days without immediate logging. In the short term: Within two months, you avoid repeating an already-documented mistake when facing a similar situation, having searched the log first.

Is "Lessons-Learned Repository Habit" evidence-based?

Yes — it draws on Reflective Practice / Lessons Learned (Donald Schön, US Army After-Action Review (1983)). Donald Schön in "The Reflective Practitioner" (1983) established the value of light daily reflection; the US Army's "After-Action Review" method proved short immediate documentation outperforms long delayed review.

Is "Lessons-Learned Repository Habit" suitable for beginners?

Its difficulty level is: Beginner. No external tools required — it can be practiced directly inside the app.

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