HD Cams are Fun or Lazy?

I'm currently taking a course in the new Sony HD cams at Video Pool. It specifically deals with the A1 (which I was thinking about buying) and the Z1 (which is a step higher). It's been very valuable in that I'm learning all about how to use them not only from a camera operators view, but also as lighting and sound tech. Hopefully I can parlay that into something meaningful.
I don't know, lately I've been feeling sorta "down." Not really sick or anything, just not all that energetic or enthusiastic. I would call it lazy, but it might be more of a malaise. I find it hard to push myself to take the extra steps, if that makes sense. I don't know if it's a physical thing (lack of a certain vitamin or something) or a mental thing. I have a physical in two weeks (my first in 5 years) so hopefully that'll answer at least one side of the question. I'm not as motivated to do things, like working out (but I still trudge through) write, watch movies, etc. I still force myself to do things so that I don't feel that I am wasting my time, but the passion isn't really there. I never thought that sitting at home playing video games and watching movies would be something that I DIDN'T want to do.