And I can only take less-than-half credit for it! My late wife Angi and I wrote a Group Study Guide for our friend Darryl Tippens’ Pilgrim Heart, both published by and still available from Leafwood Publishers since 2006.
Honestly, Angi wrote most of it out of her passion for the subject and her expertise in communication, having already co-authored a college text (Organizational Culture in Action) with her colleague Dr. Gerald Driskill. (I did get to create and provide some graphics for the second, I think, edition.) It’s available on Amazon.
Pilgrim Heart is a book about spiritual disciplines, but from the perspective of practicing them in community — hence the reason for Group Guide to help in the study of the book, which would be done individually of course.
Dr. Tippens felt that perspective was perhaps a little lacking in otherwise classic and wonderful works about spiritual disciplines and practices, and I think the longevity of his work in print already bears that out.