I'm in my last year of law school. Every day I do two things for "me": I get coffee shop time, and I read for pleasure before bed. Those are my biggies.
Music keeps me feeling alive, too. I play drums in church, and instrumental acoustic guitar at home ("fingerstyle" for the high-brows amongst us). I try to practice 15-20 minutes a day. I know that isn't a lot, but it works for me and keeps it fun. About five minutes is spent working on an exercise/warm-up, the rest is working a section. I seem to take two or three months to get a piece ready to perform, but I really love the process.
I also build steel string acoustic guitars as a hobby and usually try to get a few hours a week, but this goes in spurts. Some months I'll get a few hours per week, but some months I don't do anything at all. Again, the low-pressure approach keeps it fun and doable, and I love having a project to think about.
I'm in my last year of law school, and staying balanced is important to me. So many of my friends at school, well, school is all they do. That's not the kind of life for me.