It should be both ways and not only one ways, you already have won so why are you going to risk betting all your money away when you should know that gambling is a game of luck and no victory is certain until it happens. You can win in gambling and lose the money but you don't have to lose everything that you have won before you should quit and stop gambling. People with good money management habit can't have this kind of experience. I think it's only gambling addicts that kind be this dumb to lose all their money to gambling before quitting because they bet all they have won on one game with the hope that it'll double the money that they have already won. Knowing when to quit as a player is going to help you to manage your money well when you gamble hence it's good to know your limit and not gamble over what you planned to spend. Quitting when winning is better though as you go home happy.