Lottery has nothing to do with our skills because you can't predict which one is going to be winning number in millions of combination,all you can do is just pick random number.
If you think being positive will keep you winning at lottery then just try it.
I think the mindset is not going to play a role, although we can say that if our mindset was telling A, it could give the same A for the result. But it doesn't mean that the mindset will always take part.
Okay, maybe we can try this. Let say that we set our mindset to telling us that we can win, but what will happen with the reality? Is it we are going to win, or we are only loose? Sometimes we cannot know if it's the mindset itself or its greediness that sounding in our ears because we are difficult to distinguish it.
We have a chance to win, but we also have a chance to lose in gambling, and I think it depends on the luck. We don't know if we are lucky or not and only with playing some game, we will know. But if later we only lose, then we should quit as soon as possible because we don't have luck inside the game.