If neither your academics or your extracurriculars are taking over each other or your life, you've probably found a good balance. I'd encourage you to utilize your time working toward your potential in both areas while still maintaining a healthy social life and allowing yourself to have some fun in the process!
When you know longer know what you're doing or why you're doing it, then don't be afraid to let it go and pick up something else. When you're spending your time being miserable and late to activities, step back and consider giving it up.
For now, however, enjoy your time! All the best to you and your future endeavors --