What do I do when I'm too well-rounded?

I'm currently a soph in high school and just realized that I am too well-rounded. I have a 3.9 accumulative UW GPA and a 4.5 W GPA. I play two instruments, am treasurer of a non-profit, play tennis for 4 years (ranked #216 in the state), is involved in Science Olympiad, is involved with debate, and is set to help cancer research at a local college this summer. I don't want being too well-rounded to ruin my shot at the top 20 colleges. What do I do?