We are all human, and we tend to overestimate ourselves for the most part: our intelligence, talents, discipline and character.Poker is an environment in which not only strict natural selection reigns, where the weak will inevitably lose in the future, but in which there is also variance.If you come to the game to win, and not to vainly prove to your opponent who is the best, then do what will allow you to continue to play your poker normally.