He was addicted to martial arts. If you think about it for a second it makes sense. The martial arts thing was the same as the starcraft thing, just a different subject. If you consider that he has an obsessive disorder that presents as addiction, you can put those two things under the same umbrella. Obsession can seem like discipline.
I've long suspected they're the same thing - or, at least, on a spectrum together. I know that I just don't "feel right" if I work less than I want to, or if I skip out on a workout session I had planned on. And I know that with myself and other people I train jiu-jitsu with, we will train with injuries that rationally we know we should not. When we talk about it amongst ourselves, we say things like "I just can't sit on the couch doing nothing." I suspect this "discipline" to get back to training is similar to obsession and compulsion.
