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.
I feel excitement every time when I lose or keep winning. Do you also feel excitement when you win or when you lose?
Honestly there's so much joy in doing what you love and that's what gives you that excitement but sometimes over zealousness and over excitement over things do well to hinder and spoil things more for one, so I agree with the fact of controlling oneself when that feelings comes. But if through excitement you get yourself into another dimensions that's not positive you put a stop to it entirely. For me I feel the excitement of winning whereas when I lose i lose my temper.