If you still think it's hard to control emotions in another sectors of your life, maybe it's a good idea to analyze what you are doing to manage your money efficiently, so you can apply the same principles to your emotional life in general aiming functional results.
Well my secret is simple, I leave everything in the hands of what I am willing to lose , just by controlling that I can play with all my emotions without stopping , that's the way I do it, when I Reach my limit then I don't play anymore even if I feel that in the next move I am going to lose, it is not easy to contain yourself, but it can be achieved.