You're incredibly lucky if you're successful in gambling even for a short while- gambling is supposed to be rigged against you due to house edges and such, so it's impossible to win in the long run but there can seemingly be small wins in the short term.
I haven't found success in gambling for the most part (though I am up in betting on esports matches), but I only gamble what money I have set aside for gambling and no more, and thus I keep my gambling habits under control and I'm not addicted to gambling. It's easy to become addicted because the main goal of gambling is to make money, but the odds are completely against you and gambling should ideally only be done recreationally.
It seems you are handling yourself good when it comes to gambling. That using only the money you set aside for gambling, I consider that a success. It proves that you can handle your emotion. While others including myself will gamble all of our btc left in our wallet eventhough we told our self to keep some, we still broke it at the time of frustration.
I know a person in my locality that won big money in gambling and start his car bargain business with that money and now he is very happy and spends a normal life. It is because he never back to gambling because he knows that regular gambling will destroy him and he would lose all his winning money. Success is this that wins and quit forever.