Emotions are something that is difficult to control, we do not have the coldness that a robot does and that makes us lose money, but when it is lost, at least I feel that I did not do it wrong and only with that feeling is that one consoles himself.
I know it's hard to control your emotions but we need to bet with our mind and limit ourselves to some point where loss can be bad for us as we have seen in many cases.We have mind that can help us to make decisions better then a Robot.