Gladly, I overcome already this weakness through securing immediately my profit by withdrawing it and convert to fiat via exchange P2P to avoid gambling again for more win.
Is this actually a strategy to overcome this? I doubt it. I have seen several times where gamblers rush to withdraw their winning in the first minutes and then /make a deposit in the next minute. When it comes to losing huge win to gambling, it is attributed to gambler inability to control his habit and allow emotion to control them. For gambler who can manage and control emotions are not easily tempted with the money in their balance. Although, leaving the money in your wallet would easily tempt one to gamble but having emotional control would discipline one regardless of whether they leave money in wallet or withdraw it.
People who withdraw early and feel enough with what has been won is also a self-control, he recognizes his nature that will be easily tempted in gambling and therefore OP makes a withdrawal to secure his winnings.
If you talk about self-control, everyone can control themselves, and depending on how you recognize yourself, there you will find a way for you not to do things that you shouldn't do.
OP made the right move, because previously experienced such a mistake that made him regret it, so you don't need to think that OP took the wrong action or was in a hurry, that's how he controlled himself.