If I have positions going against me, I get right out; if they are going for me, I keep them Risk control is the most important thing in trading. If you have a losing position that is making you uncomfortable, the solution is very simple: Get out, because you can always get back in.
The most important rule is to play great defense, not great offense. Everyday I assume every position I have is wrong. I know where my stop risk points are going to be. I do that so I can define my maximum drawdown. Hopefully, I spend the rest of the day enjoying positions that are going in my direction. If they are going against me, then I have a game plan for getting out.
And then at the end of the day, the most important thing is how good are you at risk control. Ninety-percent of any great trader is going to be the risk control.