Well, if I had to say, probably just to spend more time joining clubs and getting more friends in high school. I've always been (and still am) sort of a recluse and lone wolf. I guess I just felt like I didn't really belong anywhere growing up with any social circle, so, I didn't bother with trying to make an effort in doing so, because I didn't have the greatest self-esteem back when I was a teenager.
I'm 25 now and still don't really feel any kind of attachment with most people around me. I dunno, I guess I just feel like no one would really understand me even if I did try to "fit in". Or, I guess people would just get tired of me and move on because I'm always about work this, and work that, and I have really esoteric interests that not a lot of people would really enjoy. I guess I'm also naturally boring too (lol 😅). But, yeah, long story short, I guess I could have tried to get out of my shell a bit more back when I was a teenager.