A growing list of titles many have found extremely helpful, whether in therapy or not. (Links go to amazon.com.)
Anxiety and Depression
The Mindfulness and Acceptance Workbook for Anxiety, by John Forsyth and Georg Eifert
The Mindfulness and Acceptance Workbook for Depression, by Kirk Strosahl and Patricia RobinsonPeaceful Mind: Using Mindfulness and Cognitive Behavioral Psychology to Overcome Depression, by John McQuaid and Paula Carmona
Relationships and Marriage
The Relationship Cure, The Seven Principles for Making Marriage Work and others by John Gottman
Various titles by Harville Hendrix (Getting the Love You Want, Keeping the Love You Find)
Passionate Marriage, by David Schnarch
Chronic Pain and TMS
Healing Back Pain: The Mind-Body Connection, by John Sarno, MD
The Mindbody Prescription, by John Sarno, MD
The Divided Mind, by John Sarno, MD
Unlearn Your Pain, by Howard Schubiner, MD
They Can’t Find Anything Wrong, by David Clark, MD
The MindBody Workbook, by David Schechter, MD
Addiction and Recovery
Try browsing the giant, thorough collection at the Hazelden Bookstore.
Parenting
The Whole-Brain Child, by Daniel Siegel and Tina Payne Bryson
Parenting from the Inside Out, by Daniel Siegel and Mary Hartzell
The Blessing of a Skinned Knee, by Wendy Mogel
Mindfulness
Wherever You Go, There You Are and other titles by Jon Kabat-Zinn
Peace is Every Step and other titles by Thich Nhat Hanh
Radical Acceptance, by Tara Brach
A Mindfulness Based Stress-Reduction Workbook, by Bob Stahl and Elisha Goldstein
Cognitive Behavioral Therapy (CBT)
Feeling Good, by David Burns
The Feeling Good Handbook, by David Burns
Treatments That Work, a good, primarily CBT-based, series of workbooks
Divorce and Co-Parenting
The Good Divorce, by Constance Ahrons
What About the Kids? by Judith Wallerstein
The Co-Parenting Survival Guide, by Elizabeth Thayer and Jeffrey Zimmerman
The Journey from Abandonment to Healing, by Susan Anderson
Additional Books and Workbooks
The Drama of the Gifted Child, by Alice Miller
The Power of Habit, by Charles Duhigg
The Wisdom of Insecurity, by Alan Watts
Get Out of Your Mind and Into Your Life, by Steven Hayes
The Self-Esteem Workbook, by Glenn Schiraldi
The Relaxation and Stress-Reduction Workbook, by Martha Davis, et al
The OCD Workbook, by Bruce Hyman and Cherry Pedrick