•
Lovingkindness: The Revolutionary Art of Happiness (1995) •
A Heart as Wide as the World: Living with Mindfulness, Wisdom, and Compassion (1999) •
Voices of Insight (2001) •
Faith: Trusting Your Own Deepest Experience (2003) •
The Force of Kindness: Change Your Life with Love and Compassion (2006) •
The Kindness Handbook: A Practical Companion (2008) •
Real Happiness – The Power of Meditation: A 28-Day Program (2010) •
Real Happiness at Work: Meditations for Accomplishment, Achievement, and Peace (2013) •
Love Your Enemies: How to Break the Anger Habit & Be a Whole Lot Happier, with
Robert Thurman (2014) •
Real Love: The Art of Mindful Connection (2017) ISBN 978-1250076502 •
Real Change: Mindfulness to Heal Ourselves and the World (2020) ISBN 978-1250310576 •
Real Life: The Journey from Isolation to Openness and Freedom (2023) ISBN 978-1250835734 •
Finding Your Way: Meditations, Thoughts, and Wisdom for Living an Authentic Life (2023) ISBN 978-1523516391 •
Kind Karl: A Little Crocodile with Big Feelings (2025, children's book co-authored with Jason Gruhl and illustrated by Sébastien Mourrain) ISBN 978-1645472476 == Audio publications ==