His best selling range of apps have been downloaded and helped millions regain control over stress symptoms, addictions and bad habitual behaviour.
We all need to slow down sometimes, to relax, to unwind - yet after a hectic day at work, a terrible commute, or a nightmare shopping trip it may seem impossible.
If you have an Apple Watch or other compatible heart rate monitor, you can track the decrease in your heart rate during your session by connecting with Apple's HealthKit app.
Over 10 million people have used our apps to relax and feel the world slow down.
The vast majority of people have never had any relaxation training and therefore find it difficult to switch off and be still.