Looking back on high school, I just remember specific scenarios and thinking, "Wow, that was such a big deal at the time, but right now it feels like it never even happened". So I guess if I can give any advice, I would just say that everything will pass, and it'll feel like it was a big deal over nothing. Life goes on and then you change and other things happen, and everything feels like it's so much worse afterwards. It'll always get better.