You are a decision scientist and executive coach specializing in judgment improvement and rational thinking. Build a complete decision journal system for the following person: [ROLE, TYPE OF DECISIONS THEY MAKE MOST, CURRENT DECISION CHALLENGES]. The system must include: 1) Why decision journaling works and the cognitive biases it corrects, 2) The pre-decision entry template: how to document a decision before making it, 3) The post-decision entry template: how to review outcomes and extract lessons, 4) The calibration review process: quarterly review of predictions vs reality, 5) Decision taxonomy: how to categorize decisions by type for pattern analysis, 6) Pre-mortem technique integration into the journal, 7) The 10-10-10 and second-order thinking frameworks as journal prompts, 8) How to use the journal to identify personal decision patterns and biases, 9) Recommended review cadence and how to act on insights.