Arrogance is a killer, and wearing ambition on one's sleeve can have the same effect. There is a fine line between arrogance and self-confidence. Legitimate self-confidence is a winner. The true test of self-confidence is the courage to be open—to welcome change and new ideas regardless of their source. Self-confident people aren't afraid to have their views challenged. They relish the intellectual combat that enriches ideas.

Ch. 24. - Jack: Straight from the Gut (2001)