Having a control with yourself especially while gambling is the best attitude that a gambler needs. Because if you can control yourself then you will be able to limit your losses and not losing everything you have deposited in one site. Same in having a limit if you are winning because if you are winning and keep playing time will make you lose because in the long run house always win. As myself i already able to control myself because i learned from my own experience, in the past i kept losing because i am chasing my losses and i want to recover that is why instead of recovering i lose all my balance.
good for you mate realizing that in any how there's really a bad day for us and to keep playing while you are in a losing state will let you eaten by your emotions and you won't be able to think properly in result you will lose everything so that's the good start knowing how to control to avoid losing big and to earn even in a little profits.