I don't like myself much

I really don't like myself. If I was some random person meeting me for the first time I wouldn't like myself. I feel like I don't always act like who I am. It's frustrating, I don't know why it's like this. Except for people I'm comfortable with, my brain is someone completely different than what I act like. I think it's because I'm constantly trying to impress people so much that it's become second nature to conform to the people around me. I need to fix this.