Dr Russ Harris, MBBS, is an internationally-renowned ACT trainer, and author of the world’s best-selling book on ACT, The Happiness Trap. Russ’s background is in medicine. As a physician, he became increasingly interested in the psychological aspects of health and wellbeing, which ultimately led him to change careers and become a therapist.

Russ Harris has trained over 90, 000 health professionals around the globe, and authored nine books on the ACT model. His best-known work, The Happiness Trap, has sold over one million copies and been translated into over thirty languages.

Russ is considered one of the world’s foremost ACT trainers, and his textbook for professionals, ACT Made Simple is extremely popular. The book's title reflects Russ’s genuine passion for making the principles and practice of this evidenced-based therapy simple, clear and easy to put into practice.

In 2015 Russ created an ACT protocol for the World Health Organisation, for use in refugee camps around the globe. The WHO have published three RCTs based on this protocol, showing that it not only significantly reduces depression and PTSD, but also prevents the onset of mental health disorders in those at high risk.