Decision Journal
A structured log of every initiation, scaling decision, and exit, recording at minimum the date, the action, the thesis statement, the price, the position size, the conviction level (expressed as a percentage), the explicit bear case, the catalyst and the timeline, the three operational signals being watched, and the falsification trigger. Reviewed quarterly to surface patterns across positions and annually to construct the calibration curve. The decision journal is the highest-leverage practitioner discipline that retail investors most often skip — without it, every analyst becomes a victim of outcome bias and confuses noise for signal.
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