Abstract
This community‐based study investigated whether (1) a novel sport psychology informed positive youth development program, My Strengths Training for Life™, improved resilience and well‐being and (2) young people differed in outcomes according to demographics (gender, ethnicity, social inclusion, and learning difficulty). A total of 246 young people (M age = 19.74, SD = 2.31) living in a large housing service completed questionnaires on demographics, mental skills, and pre and postprogram resilience and well‐being. Baseline differences in resilience and well‐being existed for ethnicity and learning difficulty status but did not influence MST4Life™ outcomes. There was a significant improvement in resilience and well‐being over time, which was associated with mental skills development. Implications apply for policy, program commissioners, and research: (1) novel sport psychology interventions can improve the well‐being of disadvantaged youth, and (2) demographics at baseline should be considered in intervention planning and evaluation with this population.