Books by Thich Nhat Hanh:
The Miracle of Mindfulness
Being Peace
The Sun My Heart
The Art of Communication
No Mud, No Lotus
plus many more…
Books by Tara Brach, a psychologist and Buddhist teacher:
Radical Acceptance, Embracing your Life with the Heart of a Buddha
True Refuge: Finding Peace & Freedom in Your Own Awakened Heart
Books by Jon Kabat-Zinn
Full Catastrophe Living: Using the Wisdom of Your Body and Mind to Face Stress, Pain, and Illness
Wherever You Go, There You Are: Mindfulness Meditation in Everyday Life
Books by Jack Kornfield, psychologist and Buddhist teacher:
The Path with Heart
The Wise Heart