It doesn't matter, once you win you should call it a day, your mistake is setting a target of an amount that you must win, this isn't your bank or your business, it's a game that has all things to do with luck, appreciate what you get and learn to leave, it's complete greed to expect more from gambling, what work did you render to feel like you should get paid in so amount?
Listen to yourself, after making up your mind that you won't proceed after winning some money you still end up doing it, that's a clear sign of lack of control, are you a man? Figure that out yourself, when you make a decision you learn to stand on it, this is what makes a man, someone as weak as you are shouldn't be a gambler in the first place, if you continue like this, you will end up hating yourself, and that's your fault for not having the gut to stand by your words.