They're afraid that people won't except them for who they really are.
Because they don't feel who they are is enough.
A lack of maturity.
The focus of their vision of what they see on the inside does not reflect in the mirror.
Maybe they are insecure and want more in there lives and see others who impress people easily and try to imitate them...
Don't know but I'm glad I don't do that. I learned not to do that before leaving Jr. High.
Yes and some people just can't accept who you truly are. It's sad really :o(