What about karate? Miss KT started lessons at 7, and continued till about 14. She earned a black belt. It gave her confidence and through earning the belts, she knew she was improving all the time. She started marching band in high school and simply didn't have time to continue in karate.
Funny story - she needed another PE unit to graduate from college, so she signed up for an introductory karate class. Within five minutes, the instructor called her over and said, "You've done this before." She said, "Yeah, I have a black belt." She spent the semester as an unofficial TA, and got an A in the class.
