- To Bless the Space Between Us by John O’Donahue
- Toward Holy Ground: Spiritual Directions for The Second Half of Life by Margaret Guenther
- The Creative Age: Awakening Human Potential in the Second Half of Life by Gene Cohen
- Integral Life Practice: A 21st Century Blueprint for Physical Health, Emotional Balance, Mental Clarity and Spiritual Awakening by Ken Wilbur
- The Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types by Don Richard Russo and Ross Hudson.
- Invitation to Love: The Way of Christian Contemplation by Thomas Keating