Qi Gong
-A brief history of Qi by Xhang Yu huan & Ken Rose
This book shows the historical development of the concept of Qi from its Philosophical, cultural and metaphysical roots to its present use in Chinese medicine, qui gong and tai ji quan ..."
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Relationships:

-Journey of the Heart, Intimate Relationship and the Path of Love by John Welwood , Mandala Ed

Spirituality:
-The Second Miracle: Intimacy, Spirituality and conscious relationships by Richard Moss, MD
"With grace, tenderness, and dignity, Richard Moss takes into the experience of the sacred"
Deepak Chopra

-A New Earth: Awakening to your life's purpose by Eckhart Tolle (also: The Power of Now)

-Conversations with God 1, 2, 3 by Neale Donald Walsch

-Anatomy of the spirit by Caroline Myss