How I Built an AI Trading Discipline Scorer (and Why Profit Isn't the Right Metric)

90% of traders lose money. Not because they can't read charts — but because they can't follow their own rules. I've been building KeepRule , a trading journal that uses AI to score your discipline rather than just tracking profit and loss. Here's the story behind it and the tech that powers it. The Problem Every trader has experienced this cycle: Market dips → panic sell Price bounces back → regret Buy high on FOMO → repeat The problem isn't strategy. It's execution. Warren Buffett's Rule #1 is "Never lose money" — but how do you actually implement that? The Solution: Score Discipline, Not Profit KeepRule works in three steps: 1. Record Before every trade, the user logs their thesis AND their emotional state. Not just "I bought AAPL at $150" but "I bought AAPL because of strong earnings, and I'm feeling confident but not FOMO-driven." 2. Refine Over time, wins and losses become patterns. The app helps extract personal trading rules like: "Never risk more than 2% on a single position" "