Chakras

Chakra Healing by Margarita Alacantara

Wheels of Light by Anodea Judith, PHD

Llewellyn's Complete Book of Chakras by Cyndi Dale

Meditation

The Chan Handbook by Venerable Master Han

The Miracle of Mindfulness by Thich Naht Hanh
 

Philosophy

Candide by Voltaire

Meditations of Marcus Aurelius Antoninus

Psychology

Thoughts Without A Thinker by Mark Epstein
Thou Shalt Not Be Aware by Alice Miller 
Narcissim by Alexander Lowen, M.D.