You don't have to expect that gambling will bring you money and then you won't get too upset about losing. I see a deposit in the casino as an entrance fee. In my opinion it is a very useful practice. Whether I win or not depends mostly on luck and the ability to stop in time, but I prepare myself in advance for the fact that I have already lost my money. In case of losing I am not very upset, and in case of winning I am as happy as a child. In fact, everything is simple, but for some reason many gamblers themselves complicate everything.
That's how it should be done so that we won't get frustrated by the results in the future.
Expect to lose, that's mostly the case. Now, if you win big and it hits the roof where you are able to decide to withdraw, take it. Get out and have some fun using it.
I remember one guy who said to just take a long rest whenever you win big. Don't get greedy after a win because it always ends up as a bad ending where we lose more. Since then, I used that guy's motto to run whenever I win and it's all good. We don't need to chase more wins. A win is a win, enjoy it as much as possible and then come back if you feel like you want to play again.