I agree with tngcas up to a point, but we're talking about work, not loving something you're not actually doing, such as hearing music. Actually, few people get to do work they really love as a career. If you enjoy what you do, I believe you'll actually do better at it. You'll be more enthusiastic at learning new skills associated with it. At the very least, you'll be less likely to slip into that "do the least possible" rut.