if you can resist the temptation to keep on playing/betting once you double your money. Because that is the scenario when a gambler becomes greedy. When one knows there's still a lot of money to spare to keep on betting, that's when he gets into trouble and gives in to the urge to bet more.
But, if you can keep the discipline to keep on withdrawing every time you double your money, then I bet you are going to be a good gambler. Still, do not expect you can win on the next round because everything is recorded in the gambling sites and there's a chance you might not repeat the same feat.
Many people lose can not resist the temptation on gambling and makes them gets deeper in gambling. They hard to leave gambling because gambling gives them a chance to win the games although that will not easy.
But they willing to keeps trying to win even with more money as they slowly don't care with anything that can happens to them. They will keep trying to double their money and then quit gambling but their plan will not works as they want.
That is what will happen to those wo lose the discipline and other things needed to playing gambling. They will also lose a chance to keep their money and only spend until their money is gone.