I kinda turned into an extrovert (again) after going to university a few months ago and made more than a few friends. I was an extrovert before high-school, but was lonely and limited myself to a small social circle of 2-3 people (To be clear, I'm not equating being an Introvert with being lonely, Becoming extrovert and making friends kinda happened at the same time for me). I think my biggest problem was that I overthought about stupid stuff that (now that I look back at them) were obviously not true. It didn't help that I was harassed by some of my classmates in the 2nd and 3rd (more so in 2nd) years of high school. Now, I'm really happy that I've kinda overcome that period of my life. Sometimes those stupid assumptions (like being useless or being the person that everyone just endures and secretly hates) come back to me, but it's getting better. And one last thing, If there's anybody reading this that makes assumptions like this about themselves, I assure them that it's not true and people love them.