Theory suggests health focused Community Operational Research (COR) projects and their participants can benefit from balancing a "glass half empty" concern for deficits, problems and weaknesses with a "glass half full" concern for identifying health assets and bringing them into use. We present a COR systemic intervention in the care of persons with addiction and substance use/ misuse problems in Clydeplace, Scotland (anonymised). Our research reveals how the Whole Person Recovery System is situated within a wider General Community Recovery System that offers a variety of health assets that can be mobilised to create and increase recovery capital. The project involved 20 semi-structured interviews, two asset mapping workshops, a certificated "health issues" course completed by seven "champions", and action planning and implementation. In the interviews participants found gaps were more easily identified than assets. During the workshops participants identified 388 discrete assets and gaps, prioritised these using a simple voting system and developed a series of actions to mobilise health assets including bringing into use local facilities and amenities and involving a number of individuals and groups in local events and activities. Our study suggests that even in the impoverished system of Clydeplace, a "Community Catalyst" in the form of a Community Operational Researcher can act to stimulate the co-development of health assets, build relationships and enable the creation of social capital. It is not clear though when such systems become "self-catalysing." Keywords OR in health and social care, Community Operational Research, substance misuse, social capital, recovery capital, health assets, systems. 1. Community Operational Research and health and social care improvement Operational Research (OR) has a longstanding tradition of social responsibility (e.g., see Ackoff, 1974; Churchman, 1970; Ormerod & Ulrich, 2013; Rosenhead, 1986,) and has frequently challenged OR scholars to tackle societal issues. This mission has particularly been taken on board by scholars focussing on community-based OR interventions. While the term 'Community Operational Research' (COR) originates in the UK (Rosenhead, 1986) there is a long international history of often eminent contributions to community-based interventions of diverse theoretical and practical kinds from outwith and often prior to the OR movement, including Dewey's early 20th century experimentalist and progressive educational movement (Masters, 1995), Moreno's psychodrama with Viennese