No matter you play at stake or any other gambling site, you need to have control over your emotions. You cannot win always and when you lose, you need to have your emotions under control.
It is not easy to win in gambling and it becomes even more difficult when you do not have any money management and you do not have control over yourself. As with every thing in life you need to be discipline in gambling too otherwise you will face losses.
Maybe we have a different concept for word control, but i don't see controlling emotions an effective solution to prevent unreasonable or irresponsible behavior. When you try to control or suppress negative emotions you tend not to deal with them and they will surface in some form or another at some bad day. But i totally understand people who for example take medication not to feel anything and think they can rationalize their behavior better, that could work for some time but it has a toll.
Recognizing emotions is way better way and any from a viewpoint of a psychologist.
If you recognize your emotions and can name them, split them in sections and analyze them, you are not so incapable of facing them that you would even need to control or suppress them. When you realize better what feelings you are going trough they can't control you or your gambling, they just are there.
Well that's a lifehack of mine anyway.