The anxiety and stress you described are something that I went through myself, too. Even though, I had many friends back then who were really close to me.

Don’t ever forget that usually other people are too busy thinking about themselves rather than thinking about you. It’s a cliché to say this, but at that age, most of the things we see are in our head. As you get older you realize that people don’t bother to tell you if you suck. They just move along, so who cares about them anyway.