As a gambler, our number one enemy is our emotions, so there are only two things: either we can be controlled by our emotions or we control our emotions. But it often happens to gamblers that when they get greedy, they can no longer control themselves, which often happens when they win and lose in the end.
So if we, as gamblers, only know how to control our emotions, especially if we know that we are winning gambling, then we will stop playing for sure in the meantime.