I went through a very similar situation at your age. The only bit of wisdom I learned from my experience is this:
The people who are your friends in high school, the boys you're in love with, the things that seem soooo big now- once you've hard a little bit of space and time between them - you're realize it's not as big, not as important. I'm not trying to minimize what happens, I'm just saying - at least for me... everything was a big deal, I looked at everything through a magnifying glass at that age.
Once I got a little older and a little bit of time had passed- I realized that a lot of the people who were so important to me, were no longer even in my life and I had forgotten and forgiven....
The problem with being a teenager honestly- is that you just have to live through it. You're definitely ahead of where I was at your age - and I made it through somehow.