A tentative working definition is: Wellbeing and health coaching psychology is the practice of health education within a coaching framework and context underpinned by psychological principles, to enhance the well-being of individuals and to facilitate the achievement of their health-related goals (adapted Palmer, 2012).
Reference
Palmer, S. (2012, November). Health coaching psychology: using cognitive behavioural strategies and techniques [Workshop presentation, slide 5]. Col·legi Oficial de Psicologia de Catalunya (Official Psychology Society of Catalonia), Barcelona, Spain.