Dave acts completely different now. He used to think he was the hottest thing since sliced bread and assumed nothing was his fault, complained and whined, threw fits. Nobody liked him because of that. His attitude has burned him many times in the past and I'm sure ruined some personal relationships. It almost seems as if he finally realized that he was just hurting himself acting the way he was because in the past year or two he has really calmed down. If he misses a shot he shakes it off, he smiles more, he's out talking to people, he's going out of his way to help people and to run clinics. As a person he has changed and people took notice.
in other words he grew up.