After many years of experience, I realized that losses are part of the proccess trading. Losses happen to the best traders. The best traders I know do not have a 100% win rate.
When I take a loss, I sit down in order to:
a) review the trade
b) learn from my loss
What do you do when you take a loss?
Everyone has their own theories, but they should see how others do it. I'd love to learn from others.
Trading isn't just about making gains; it's also about minimizing your losses. I lose about 50% of my trades, but my stop losses keep those losses small. So, managing risk is a big part of trading, and I'll never stop encouraging others to use stop losses.