1 rule = allawys think about winning and nothing but winning
2 rule = never get so greedy
Well if you are always thinking about winning and nothing but winning, then i think you are being greedy and that is really ironic about your rule number two. I think never think like that because gambling is like a woman, noone can understand them. We just base on our luck and luck alone, so please be careful.
You are being unrealistic as well, you do not accept defeat easily because you only believe with one possibility which is to win. It's not good to have that kind of thinking in gambling, we will surely not gonna last as that is not being smart. Luck is good but we need to develop our method as well.