I find it hard to choose favorite books.
I recommend books written by His Holiness the Dalai Lama
including options outlined here:
Books by the Dalai Lama 5 of my other favorite books include:
1) Happiness by Bo Yin Ra
2) The Tibetan Book of Living & Dying (Intro by Dalai lama)
3) The Alchemist by Paulo Coelho
4) The Secret by Rhonda Byrne
5) Tao Te Ching by Lao Tzu