Reflections after a major trading loss: 1. Imbalanced position management, with a single bet exceeding 20% of the principal, resulting in severe injury from a single mistake; 2. Emotion-driven trading, retaliatory opening after consecutive stop losses, uncontrolled leverage magnifying risk exposure; 3. Obsession with averaging down, speculating on a rebound even after Bitcoin fell below the EMA30 moving average, leading to a tripling of losses. Blood and tears lesson: Always use 5% of the principal for trial trades, recognize losses at breakout, and leave enough defensive space to avoid fatal drawdowns. Respect the market, be patient in accumulation, and you can survive amidst volatility.