I can honestly say I have never had a need to feel I should try to change someone. Further, only if someone requested my help to change something about their self, would I even entertain the thought.
People (adults) are who they are, do what they do and act & believe as they do. Accept who they are or do not. It's fairly self-absorbed and arrogant to think we have the right to attempt to change anyone is some way...in order to please us.
If I'd have ever tried to change someone, it would serve me well to be told to get lost. Attempting to change some one is the same as telling them they aren't fine just the way they are. I surely wouldn't appreciate that, why would anyone?