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Congratulations to you OP, that's a big amount of winning and also that's a good decisions to quit in gambling because you already have a profit but before that like what other user said above make sure to withdraw it first in order to prevent such loss. But in my own I don't think so if you are permanently quit in the world of gambling because once you are experiencing a good amount of winning then theres a chance that you will be gamble once again.
I have seen many stories similar to this, where a player makes a lot of profits, but because he gets very excited and wants to make more money, he ends up losing everything, and that is what should be avoided because a person who has money is better than not. nothing, I'm one of the players that when they get some profit, they withdraw at once, because I know that if I keep playing I lose it, or another strategy is that I'm going to play something else, but little, what interests me is to try luck and if I see that I have no chance I'll go with my earnings, it's better to have the money and enjoy it than not having anything because I lost it in a very foolish way, and there are people who don't mind losing that amount of money.
When you are on an emotional boost up then you could really say up things on what you do have in mind but just like the rest been saying that it is really hard to believe that you could quit up
when you are on a winning state.For losing state then it would really be just normal but for winning? Its really hard for it to be done by someone.You could really be rather thinking off on playing
even more because you do really believe that you could even getting more if you do decide to play more.So quitting on this situation or scenario is close to 0% but if you are a man
or person who do have that strong will and extreme self-discipline then it could be possible but its really hard to believe on imho.