That's gambling for you. If you get lucky today and got a big win, enjoy your win and only gamble with a little amount when next you want to try your luck. But if you feel that you will replicate what happened yesterday today again, you will gamble blindly and forget that luck is superior in gambling.

No gambling strategy can give you a long-term profit, and that shows that strategy isn't what made you win your bet but luck because gambling is not by skill.