Over self-confidence leads to arrogance

I was watching X-Factor the other time when one of the contestants reminded me that over self-confidence will lead to arrogance. The contestant can sing, but the problem is that the attitude and the self-confidence was way extreme. At first, people thought it was interesting but after that, it became offensive. Even though the singing was above average in my opinion, no one wanted that person to go through.

Self confidence is good, but too much of it becomes arrogance, especially when you shut out all else.