Maybe not something i wish I knew, but I wish I had a zeal for education when I was younger. It really took me until about my junior year in high school to really click. Only then did I actually appreciate studying. Before then, it was just an obligation. I still did fairly well, but I wish I had been more intentional about it.

Also, get involved in groups and don’t be so shy. Nobody cares about the small anxieties that you’re worried about. Just join groups and have fun. Still hard to apply this lesson even as an adult, but I try.