You cant really just that make yourself expecting something positive because gambling is really just that random and also it will really be basing up with luck factor which this is something
that needed up for you to win.
It is a fact, with the game one should never expect something with too much Expectation, because in most cases we can lose, so that is where that logic comes from that we should never forget, first limit the money, second if we already have our money willing to lose then all we should do is bet and enjoy, and whatever the result is, enjoy it and accept it, nothing more, it is a Harmless logic.