Callings: Finding and Following an Authentic Life by
Gregg Levoy is a gold standard. He addresses such questions
as "How do we know if we're following our true callings?"
"How do we sharpen our senses to cut through the distractions
of everyday reality and hear the calls that are beckoning us?"
and "How do we handle our resistance to a call?"
For an in-depth spiritual approach, work with a contemplative guide
to creative livelihood design in
Zen and the Art of Making a Living by Laurence G. Boldt.
What Color is Your Parachute? by Richard Bolles, is a classic
self-help reference in the search for fulfilling work. It's an excellent and very
practical manual, combining text with a step-by-step discovery process.