Hugh MacLeod, a corporate guru/artist says, "Ignore Everybody" when it comes to creativity. His book of the same title has been on the New York Times best seller list.
See his cartoons at http://gapingvoidgallery.com/ He doesn't mince words, this boy.
I admire people who can make a living out of 'thin air'. He started making doodles on the backs of business cards and has shepherded this idea into a roaring business that seems to grow expediently.
I'm looking forward to reading his new book. Flipping through the chapter headings, I can see even though the book is aimed at corporate types and addresses creativity, a working artist can certainly benefit from reading it. After all, work ethic is work ethic.