Just be yourself, do things that make you happy, try your hardest in school. When you feel like you're not getting something, ask questions. If you feel like your teachers aren't there to really help you, go above them and ask questions. It's important to know what you're being taught. Don't ever feel like you can't ask questions. Join some sort of organized extracuriccular activity. Whether it be music related or sports related, or whatever. Just try your best, and, never give up. Good luck! Eleventh and twelfth grade were my favorites, only because I finally got some self esteem.