I recently finished reading Gary Vaynerchuk's "Crush It: Why Now Is The Time To Cash In On Your Passion." I realize the book is a bit dated considering how fast the online environment changes - it came out in late 2009. However, I think the book has some great points that can apply to any industry or passion. The book can pretty much be summed up as follows:
I feel like the above checklist is applicable to any person trying to do anything. Define your passion, engage yourself in your passion, market yourself, engage others, continue the conversation, and monetize. Just all around good life advice. I like it.