You must not be there yet. When he gets there he will KNOW how much he has grown. Introspection doesn't mean we have to constantly look at faults or beat up on ourselves. It also can mean we accept ourselves as we should accept others.
It is a good feeling and very mature when you can get to the point that you can accept yourself unconditionally and be able to tell yourself that you ARE ok. Just the way you are....
Would you prefer that we beat ourselves up?
Growth never stops.
I agree with all of that. Still, so many people just move on without really making any changes and just relive the same sh*t over and over. Each situation is unique.