---
name: learning-from-failure
description: Extract the lesson from a mistake by examining the reasoning that produced it, rather than only the outcome. Use after something goes wrong, personally or as a team.
---

# Learning from failure

Failure teaches only when examined, and the natural response is to move
on quickly. The lesson is rarely in the outcome and usually in the
reasoning that made the wrong choice seem right.

## Method

1. **Reconstruct what you believed at the time.** Decisions look obvious
   in hindsight, and judging them by the outcome teaches nothing (see
   decision-journals).
2. **Separate bad decisions from bad outcomes.** A sound decision can
   produce a poor result and should not be unlearned.
3. **Ask what would have changed the decision.** What information or
   check was available and unused is the actionable finding.
4. **Look for the systemic cause.** What made the mistake easy to make,
   since blame stops enquiry exactly where it becomes useful (see
   incident-postmortem).
5. **Write it down while it stings.** Detail fades within days and
   narrative replaces it, usually flattering.
6. **Change one thing.** A specific practice or check, since general
   resolutions to be more careful change nothing.
7. **Revisit whether the change held.** Most lessons decay without a
   check (see project-retrospective).

## Boundaries

Learning from failure needs psychological safety; where mistakes are
punished, they are hidden and nothing is learned. Not every failure has
a transferable lesson, and forcing one produces superstition.
Over-correcting from a single incident is its own error.