#TradingStrategyMistakes Common trading strategy mistakes include over-optimization (fitting a strategy too closely to past data, leading to poor real-world performance), lack of backtesting/paper trading before live execution, and ignoring risk management (improper position sizing, no stop-losses). Many traders also fall victim to emotional decision-making, deviating from their plan due to fear or greed. Finally, a significant error is failing to adapt an existing strategy to changing market conditions. These pitfalls often lead to inconsistent results and capital loss.