Let profits run. Most Traders do the opposite. They tend to get out of a rallying commodity too quickly, while holding losers too long. They often stick with a small loser until it really hurts, then take the loss. This is an undisciplined approach and goes back to money management, a trader needs to develop and stick with a system.
Emotion makes many traders hold a loser too long.
Many traders don t discipline themselves to take small losses and big gains. There is also a striking inability to stay with winners. Most traders are too willing to take small profits and, therefore, miss out on big profits. This takes patience. It sounds simple, but it takes discipline to trade correctly.