Well, you're talking about hubris, I believe, excessive self-confidence or pride, and I am reminded of an example from history, the Roman triumph.
The triumphal procession was just about the highest honor the Romans could award, short of deification, to a commander who won great victories in battle, or won a war. In fact, it was practically a deification, if for a day. You can imagine that someone with the qualities necessary to lead a nation's army in battle probably has a good, healthy dose of self-confidence to begin with.
Well, the Romans had a keen sense of human nature, and realized that something like the adulation of the nation could send someone already pretty self-confident, cocky, even, over the edge. So, over time, they developed the customer of having someone accompany the victor in his chariot, to repeat the phrase, "Remember that you are mortal."
It seems wise to remember this at all times, in any of our endeavors, that no matter how good you get, you're still mortal, there are always new things to learn, proficiency levels to maintain, and there are always others striving to outdo you. When you win the crown, smile, blush and say, "Aw, shucks!".