#TradingStrategyMistakes One of the biggest mistakes in trading is to operate without a defined strategy and, worse yet, to change it every time a loss arises. Many novice traders are driven by panic or euphoria, forgetting that every strategy needs time and discipline to show real results. Another common mistake is over-leveraging, believing that this will multiply profits, without considering that it also increases losses. It is also common not to place a stop loss or to move it impulsively, hoping that the price will recover.