The only advice I have is to let yourself be busy, but keep time for yourself. Next year you'll be sharing a building with potentially hundreds of other girls. Cherish your alone time. Go to all the school dances. Buy every stupid tshirt someone tries to sell you. Friday night football games are a must, even if you hate football. Spend lots of time with your family, you'll regret not doing that once you move out. Start applying for colleges early, you'll have a better chance of getting the dorms you want. Do NOT let senioritis get the best of you, even after you've gotten into the schools you want to go to. Take a crap ton of pictures and clean up your social media sites (Facebook, Instagram, Vine, twitter). And my biggest regret was having a boyfriend, I wish I had stayed single but do whatever works for you!:) have fun, it really is the time of your life!