Written by Drs. Clarissa Ong and Michael Twohig, this self-help book on perfectionism provides ACT-based strategies for people struggling with impossibly high standards and self-criticism that keep them from living a fulfilling life. Selected exercises from the book are freely available online.

Get Out of Your Mind & Into Your Life is an ACT workbook written by Dr. Steven Hayes, the primary developer of ACT, with Spencer Smith. It can be applied to a range of problems, from anxiety to anger. The workbook aims to help you build and sustain a vital, meaningful life.

ACT Guide is an evidence-based online self-help program designed to improve emotional well-being and teach skills for coping with mental health struggles, including depression, anxiety, and stress. It was created by the ACT Research Group at Utah State University.

An ACT-based self-help guide published by the World Health Organization (WHO), Doing What Matters in Times of Stress: An Illustrated Guide teaches practical skills for coping with stress and adversity. The guide is available in 20 languages, including Chinese, Farsi, and Spanish. Audio exercises are available on the WHO website here.

While not technically a self-help book, Robert Wright’s Why Buddhism Is True is a treatise on Buddhism and meditation through the lens of neuroscience, evolutionary biology, and psychology. It explains how mindfulness, truth, and happiness are inextricably linked and provides guidance on how to move toward all three.