Sometimes psychology in Trading plays a trick on us; thinking with a cool head and not letting our emotions take over helps to achieve better profits. In the event of losing a trade, it is good to analyze why you lost the trade, what caused it—your impulse or a market change due to external pressures.
Maintaining a strategy and always replicating it helps to combat that fear we create in the midst of trading.
Remember, you have control over your emotions, not the other way around.