Continue to look for ways to explore your interests and get involved across sports, arts, community service, clubs, and organizations. Depth means more than breadth. If you have not already, make sure you create a resume. If you have started one, make sure you continue to build it out and update it as you get involved in more extracurriculars and activities.
Make sure you develop and solidify your plans for this summer. Take advantage of the opportunity to do something you care about. Remember, what you do in high school counts and becomes part of your story. work on writing a story you will be proud to tell when you are a senior applying to college!