The Self-Management of Well-being (SMW) interventions are evidence-based in strengthening self-management ability and well-being of older adults. However, use of the SMW interventions in health and social care is still limited, despite their profit for an aging participatory society. Knowledge about successful implementation is lacking.In an implementation project, 60 professionals from 23 health and social care organizations were trained to deliver the SMW interventions. Together they recruited 287 older adults to participate in the SMW group intervention. The research had two main questions: 1) Which factors determine the successful implementation of the SMW group intervention in health and social care and 2) Are the effects in older adul...