The question here is how do you relieve your excitement? Do you continue to play or do you stop there? The particular habit I observe in gamblers, professional or amateur, is that they are concerned about winning but do not feel the need to relieve their excitement. They are prepared to lose money and in the same way, they avoid limitations in order to earn money from gambling.
Relieving excitement varies but an easiest way to relieve oneself from excitement is practicing meditation before undergoing a task or a decision that way you give your mindset control over your actions and at such every forces that controls the excitement is being managed, I know deep down when we experience such excitement we can't get hold of ourselves but at that very point practicing a deep meditation techniques helps in minimizing it and controlling the actions not to go overboard.