I learned that the only way you are going to get anywhere in life is to work hard at it. Whether you're a musician, a writer, an athlete or a businessman, there is no getting around it. If you do, you'll win - if you don't, you won't.
I'm a geophysicist and all my earth science books when I was a student, I had to give the wrong answer to get an A. We used to ridicule continental drift. It was something we laughed at. We learned of Marshall Kay's geosynclinal cycle, which is a bunch of crap.
I still dance, probably three times a week, unless I'm working on a crazy job, and then I just don't have any free time at all.