Anxiety Disorder Recovery Specialists - Director of Linden Tree Education - NCFE Anxiety Disorder Recovery & Practitioner Accreditation. Charles Linden has helped over 200,000 people from around the world to find freedom from anxiety disorders. His program, The Linden Method, Residential Retreats, books, apps and TV series have helped millions to, not only, find freedom from their anxiety disorders, but also to realise their dreams. Charles is a life coach to businesses, media, sports-people, celebrities and clients from every corner of the world. Charles works with government organizations, medics and psychologists to bring true, lasting recovery to all sufferers.