Simply put, yes. Though recently I have discovered there is more to life than sitting downstairs and drawing. I keep myself working because I want this story finished and If I don't do it it won't get done. Lately I work myself hard for two nights, then maybe relax on video games before going back to work.
As for working on other drawings, I make my own schedule. Sometimes I do tend to work on the comic as opposed to other drawings, but often times it's the other way around. Since I'm drawing the comic so much, often other projects are a bit of a break from the comic. But the comic takes priority overall because I try to stick to my schedule.