Not strictly a book on writing–but a workbook for being creative as a believer. My Sunday school class at The Rising (I miss you guys more than I can say) went through this last year.
I appreciated the push to use our whole self (imagination included) in the service of our Lord. Creativity is a gift, not to be neglected, nor to be worshiped, but like other gifts, to be encouraged, exercised, and channeled toward deepening our relationship with God and with others.
While I tended to find the exercises annoying and pointless, many of the questions about our own processes and work as creative people were insightful and helped me think through my strengths and weaknesses as a writer. I think I’m a bit stronger for that.