I don't see how the positive mindset affects the outcome of the game. It's good to have a positive mindset and believe in the game, but that does not affect the outcome of your bet in any way, especially for people like me who play more sports betting. All you need is to analyse the game properly and hope luck does its part. The players will play whatever they want on the pitch or court, and there's nothing your mindset or prayers can do about it.

The goal is not to be extreme. When you have a mindset that you will win, you might just keep playing and losing till you lose more than you can afford to. So even if you believe that you can win, which is normal, because there's no point playing if you believe you can't win, you should be reasonable and gamble responsibly.