Work at being good at high school
You're half way through your first year of high school, and there's so much to deal with. There are often a lot of positive things associated with this time: establishing new friendships and networks, trying out interesting electives, learning practical skills. But there's also plenty of negative things to deal with: disappointment, feeling overwhelmed, feeling disorganized, having difficulty figuring out where you belong. Take time--not just once but at least once a week--to identify what's going well and what isn't. What are the positives to accentuate and the negatives to eliminate? Being self-aware and honest with yourself is going to help you get through this year, and if you'll stay in that habit will help you every year of high school and beyond.
Improve your grades. Set modest and achievable goals--like improving your grade in each class by just three points--and track your progress at that goal. Do this in a positive way by studying a little harder and giving an extra half hour of effort, but also do this in a negative way in the sense of working to eliminate one bad habit or time-waster.
Look for a mentor. Maybe you've already got a teacher, coach, or counselor who is a mentor to you. If not, go find one. You need to have at least one non-family adult who you trust to give you advice, to listen to you, and to have an academic relationship with beyond the time in the classroom. Maybe your school has provided you a mentor though some sort of advocacy program, but maybe that teacher is not really going to be a mentor to you for whatever reason.
Continue to explore your interests. Remember that the whole point of education is to help you be a productive, happy, and interesting person. You can’t and shouldn’t wait until some future date to start working on those things. Explore activities and interests that you haven’t before. Try out a new club, sit somewhere different for lunch, find an interesting question to ask a teacher you haven’t connected with yet. The great thing about high school is that you get to do a lot of growing and changing and developing—you’re not stuck being the same person you were at the beginning of this year. But the hard part is that you are in charge of that growth and development; it can’t happen passively. So try new things, read new things, listen to new things, talk about new things, think new things.
Build confidence and clarity. There are dozens of ways to actively reduce your stress and build your confidence. If you haven’t yet, try at least one. Practice meditation; begin a workout routine; join a book club; take a low-stress online course; take on an art project; volunteer; write a short story; find a mentor; be a mentor.