Quote from profitplay:
Do you yell and scream at the computer if you do a bad trade?
A good trader should stay calm.
Before you enter the market, you are prepared to lose. So if the outcome turns out to be bad, you have to accept.
Yelling or screaming doesn't help the situation. It makes it worse.
If you get spoilt or angry after a bad trade, you may become more emotional and make more impulse decisions, so you get more bad trades - vicious cycle!
I just be more cautious when I face too many bad trades/losses in a row (that may mean this day is not for me), but I stay calm for most of the time.
If I find out I tend to make impulse decisions or get emotionally affected, I will stop trading. Relax and take rest. Trade back if my mind returns to normal.
PS: I know some traders will shut at the screen, saying something like "get the fxxking price up!" (hand moving up and up again). Hey, Mr market will not hear what you say, no matter how loud you say.

