Learn from Your Decisions

The practice of systematically extracting learning from decisions—both successful and unsuccessful—through structured review processes. Decision learning requires: (1) Separating decision QUALITY from outcome QUALITY (a good decision can produce a bad outcome through chance, and vice versa). (2) Evaluating the PROCESS (was the information gathered, were alternatives considered, were assumptions tested?) independent of the RESULT. (3) Documenting decisions at the time of making them (to prevent hindsight bias from contaminating the review). As a mental model: decision learning compounds: each reviewed decision improves the decision process for all future decisions.

When to use it

When decision quality needs improvement through systematic review; when decision process needs to be evaluated independently of outcome; when hindsight bias threatens to contaminate decision assessment; when compounding decision improvement would produce significant long-term gains.

How it can help

Implement a decision journal and review process. The practices: (1) At decision time: document your reasoning, the alternatives you considered, the information you had, and your confidence level. (2) After the outcome: review the decision PROCESS against the documented reasoning—not against the outcome. (3) Identify: was the information adequate? Were alternatives considered? Were assumptions valid? Was the reasoning sound? (4) Separate luck from skill: good outcomes from bad processes are LUCKY, not skillful. Bad outcomes from good processes are UNLUCKY, not unskillful. For entrepreneurs: a decision journal is the single highest-ROI learning practice.