These are 10 books that I find myself re-reading, referring to again and again:
Not Always So: Practicing the True Spirit of Zen, by Shunryu Suzuki
Practicing Peace in Times of War, by Pema Chodron
A Hidden Wholeness: The Journey Toward an Undivided Life, by Parker Palmer
The Tibetan Book of Living and Dying, by Sogyal Rinpoche
Bring Me the Rhinoceros: And Other Zen Koans That Will Save Your Life, by John Tarrant
The Joy of Living: Unlocking the Secret and Science of Happiness, by Yongey Mingyur Rinpoche
Taking Our Places: The Buddhist Path to Truly Growing Up, by Norman Fischer