Like many commenters here, I can totally relate. There are many careers I know I would enjoy. I think the first thing I ever said I wanted to be as a kid was "archaeologist" when I was about six years old. :) My stated desired career changed many times over the years, and when I actually graduated from college (where I took a ton of electives in a variety of subjects), I went through different jobs/careers I thought I would like. But, none of them made me happy, because none of them gave me the lifestyle I wanted.
I'm almost there, now. I have the freedom I want by being my own boss and making my own schedule (and NO alarm clocks!), but am not at the point yet where hustling for money isn't an issue. When I get to the point where I have more passive income coming in and don't have to spend 12 or more hours a day in front of a computer to make ends meet, THEN I will have my ideal lifestyle.
I'm getting there. :)