Kjetil Mellingen is a distinguished Clinical Psychologist and Cognitive Behavioral Therapy (CBT) therapist, specializing in adult therapy. He is a renowned researcher with the National Institute of Mental Health (NIMH) in the USA and an inventor with several contributions to the field. Kjetil is also a dedicated university lecturer and trauma therapist.

Kjetil has extensive experience working in private practice, SOS Children's Village, CCL Management Consultants, and the largest hospitals in Norway. He is an expert in treating Obsessive-Compulsive Disorder (OCD), anxiety, depression, Trichotillomania, and skin-picking disorders. His work has been published in several of the largest peer-reviewed psychiatry journals.

In addition to his professional achievements, Kjetil is happily married and a proud father of two adult children. He has also served as the Research Director for the Joint Child Health Project, one of the biggest long-term research projects in the world.

His passion for mental health and his commitment to helping others have made him a respected figure in the field of psychology.