What is a piece of advice you wish your high school self had known - something that matters more than grades?
I wish I had understood earlier that this is a time to explore, not to be perfect, so try things out of curiosity, join something new, help at school, or take a chance on opportunities even when you are unsure or think you might not be good at them. You learn just as much from what does not work as from what does, and mistakes only matter if you stop learning or give up. Who you spend your time with also shapes who you become, since community and shared experiences help you grow, understand what you care about, and become well rounded over time.