Sometimes people around them don’t make it any easier. If people around a person immediately show contempt to a person who admits they were wrong, it enforces a microculture where change is going to be harder and more painful than necessary.
This is a real problem with changing your mind.
I can’t believe how many times I’ve been told I’ve changed when I no longer found something funny or said something that I wouldn’t have in my teen years.
One of the longest-running opinions of mine that hasn’t been disproved yet is that many people just don’t really mature or age mentally, it seems; they just grow older, without accumulating much if any wisdom.