This reminded me of this guy I was friends with starting in kindergarten, really smart kid, everyone kind of thought he would go on to study physics or something. Then sometime around 14 or so he started juggling and got so obsessed he would constantly practice during every break and even on the train to/from school. I think he's working as a circus artist now? Always kind of fascinated how you could get so absorbed in a topic, especially given my own propensity for rapidly cycling interests.