Study for your tests and exams. Don't wait until the last minute to start studying. Set aside time each night to review your notes and practice answering questions.
Eat healthy foods and exercise regularly. Eating healthy foods and getting regular exercise will help you to feel your best both physically and mentally.
Manage your stress levels. High school can be a stressful time, so it's important to find healthy ways to manage your stress.
Seek help when you need it. Don't be afraid to ask for help from your teachers, counselors, or tutors if you're struggling with a particular subject or assignment.