I think we all change as we grow older and gain more experience. I know I look back and cringe at things I have done or said in the past. Times change and people change. What we once thought of as perfectly fine behavior 10-30 years ago may not be today.
He seems like a smart guy :) He said he has looked at himself in the mirror and seen things he would like to change. It seems like something we could all stand to do once in a while.