Instant Image Therapy (IIT) is a technique unique to the Therapy Retreats range of programmes. It has been developed over the past 40 years through the clinical practice of David Keighley, Director / Therapist of Therapy Retreats. It's fundamental premise is the fact that two-thirds of the brains activity is through 'vision' in the visual cortex. Our reality is what we see and what we think about what we see.