Spiritual Writing Books

Writing Spiritual Books: A Bestselling Writer's Guide to Successful Publication
Hal Zina Bennett

I particularly like the chapters on "Mapping Out Your Book," which uses one of my favorite tools--mind mapping--to help you structure your book, and "Exercises That Grab Your Readers' Attention," which helps you write spiritual exercises that are both grounded and engaging.

Spiritual Writing: From Inspiration to Publication
Deborah Levine Herman with Cynthia Black

Written by a literary agent and a publisher, the bulk of this book is geared towards the business of getting a spiritual book published.

Christian Writers' Market Guide 2005: The Reference Tool for the Christian Writer
Sally Stuart

How to Write for the New Age Market
Richard Webster