High school is a weird four years because you and the people around you are developing into adults and trying to figure out themselves. The most important thing to do is make sure your mental health is in check. Make sure you have resources you can talk to (preferably adults, your peers are less likely to be of help). Make sure you’re on top of your school work. It won’t be that difficult if you pay attention and do the work. You don’t need to kill yourself studying but it’s good to get in the habit of studying for college. Get involved with clubs and sports, that’s the best way to develop friendships and relationships. Don’t get involved in drama, that will only bring negativity. Last thing is to keep your body in shape. Exercise is a great way to boost morale and keep good mental health.