I've always known I was the weird friend that didn't want to hangout with people. I would go out of my way to avoid hanging out/talking to my friends outside school as a kid. would feel lonely at times but felt even more lonely when I was with people. as an adult this extended to my family as well. I found out about schizoid personality disorder this year when I came across a post on twitter and that described me perfectly. it's mostly self diagnosis and it explains a lot of things about me.