Child and adolescent psychiatry has traditionally focused on interventions for symptomatic youth. Here, we will present the use of a family-based assessment to identify opportunities for health promotion and illness prevention at the family level. Caregivers are included as integral to the development and sustenance of youth emotional regulation, while community-based health promotion interventions are emphasized for their leverage in developing self-regulation skills. The process of empirically based assessment using standardized, multi-informant rating tools is demonstrated. This coincides with written, video- and interview-based description of the family-based approach utilized here as it would be implemented with families presenting for treatment. Tiers of health promotion, illness prevention, and treatment intervention are described in the context of pediatric mental health care with an eye toward equity and inclusion. We describe the inclusion of motivational interviewing, goal-setting theory, and a trauma-informed mindset to create family-based, strengths-oriented goals. Participants then practice these skills in reviewing case materials to which the ideas can be applied as well as using handout tools developed to scaffold the goal-setting process. Data are shared on the feasibility and acceptability of this family-based approach to health promotion and illness prevention from randomized controlled trials in a general pediatrics clinic and a perinatal clinic from an academic setting, as well as a comprehensive community intervention with the foster care system. Participants in this Workshop will achieve an understanding of the rationale for family-based assessment and intervention as well as the role of health promotion. Participants will also attain hands-on experience in implementing family-based mental health care in a preventative context. Strengthening the clinician’s capacity to engage and serve the mental health needs of the entire family multiplies the potential efficacy of child and adolescent psychiatry interventions. Furthermore, an emphasis on health promotion and illness prevention leads to earlier and more sustained support for emotional regulatory processes to develop.