Careers: Money or happiness?

Unfortunately for me I want a job that ifs full of happiness. Why unfortunately? Well, I love being able to say: "Oh I wanted to be a concert pianist" and if I worked hard enough (much harder that is) I really could become one. However, I'm going into accounting since in real life, the naturally talented and insanely devoted are the most likely to become performance worthy. I don't like accounting and it only started as a whim in Grade 11 when the course was bird in itself, but everyone's saying about how it's one of the highest paying professions. It was rather depressing getting my income tax done last week, thinking that would probably be what I'd do for the rest of my life.
So I would love a job that provides mega-happiness over high pay, but I don't see how going into Commerce helps with that. My backup plan would be that of a Math Teacher, which I'm not particularly ecstatic about, but it would definitely be better than sitting around a desk, avoiding trying to surf the net every single day.

Jam it back in, in the dark.