I was an outcast, reject and social failure, so I didn't have much incentive to try to fit in.
I did have some people try to pressure me up to act and look a little more normal, mainly family and relatives, and some kids at school, but with how I was always treated inferior, unaccepted, picked on, and not considered a member of society, (also I was still treated like s**t even if I tried to act normal), I ended up having very little desire to fit their standards. I felt disgusting in trying to because I knew they would never treat me decent no matter how hard I tried to fit in. To me trying to be like them was an insult upon myself.
I never got into drugs, smoking, sex, or gangs, or drinking, or partying as I had no one to impress and most people refused to have anything to do with me and would quickly shoo me away, ignore me, or flee. I felt totally alien and inferior/ugly when trying to normal social things that younger people do. I didn't try to date either. No one liked me back then, and I was too weird for most people, and I am so damn socially stupid and awkward. And I had the added problem of being very poor and not being able to afford anything nice to wear and my clothes often got very worn out.