Lynch is not just a film-maker and artist, but an author as well. His book Catching the Big Fish: Meditation, Consciousness, and Creativity is an insightful, humorous, and surprisingly practical guide to fostering creativity. While focusing mainly on transcendental meditation and how it's aided his creative process, the book also gives insight into the making of many of his movies, his inspiration for art, and ways in which everyday people can make better use of their creativity. For example, Lynch dismisses the cliche of the starving artist, correctly noting that it is difficult if not impossible to be creative when you're worrying about keeping a roof over your head or where your next meal is coming from.
I'm not sure I'm on the TM bandwagon, but for a person whose art can be so dark and disturbing, Lynch comes across as a serene person. Learn more about the book and about the David Lynch Foundation For Consciousness-Based Education and World Peace here.