Hey guys, I've been lurking for a while and decided to post asking for some advice.

My biggest obstacle to success is low confidence and insecurities about various things.

The problem is that I know that I'm intelligent, relatively good looking and opinionated, I know I have value but I don't believe it deep down.

I find myself caring what a stranger thinks of me even if I can rationalize that I have no reason to.

How do I align my beliefs with what I rationally understand about myself? What are some practical ways to deal with insecurities?