And the idea of making someone wealth from gambling is because you see other gamblers win big.

There is the reason behind that and that is because we always compare ourselves to the others. If we stop doing this and focus to what's the reason why we gamble, then we won't be moved with that and will do as is when we gamble.

It's good that you don't get upset when you lose. Many do are upset including me when I lose but I make sure that it won't affect me a lot emotionally.