I have a lot of rules when I gamble, I have "fun" money whether it be bitcoin or cash. I don't ever lose more than that what I had set aside for the fun money.
Also-know when to quit when you are ahead, I don't ever set a goal for how much I want to be up, because if you are so close to that amount, you might never hit it and then be out of money. Usually depends on the situation, but if I hit a couple lucky runs, I will say, ok, I am going to be up this amount no matter what, and replace my fun money with profits, so that even if I lose, I still maintain my profit.
Use gambling as a time for fun, don't try to get rich out of it.
But you stil have the option to get rich. I was just looking around casinos, some of them have very tight edge, so its not unrealistic, with a bit of luck of course.
These guys are winning 200-300 BTC, constantly, man the big bucks are always at the casino. Yes the house wins slowly, but if you are a whale you can win big, just like those guys.
Or you can just play some poker.