If you've read our blog for awhile, you know how much Seth Godin has influenced your fearless leader. He is known primarily as a marketing guru, but clearly has the soul of an artist, and SO many of Seth's writing applies directly to a creative person's life.
He has recently released "Seth's Store", making it easy to find and procure most of his books, as well as some of his other items:
(While you're there, be sure to sign up for his blog updates -- they're free!)
These are the essential titles I'd recommend for all performers:
The Icarus Deception
We Are All Weird