PROJECT SUMMARY/ABSTRACT Adverse Childhood Experiences (ACEs) constitute a serious public health issue, impacting almost half of adolescents and over 60% of adults in the United States. High ACEs exposure (i.e., four or more ACEs) may result in self-dysregulation (i.e., challenges managing cognitions, emotions, and behaviors) and lead to early initiation of alcohol and substance use (e.g., self-medication hypothesis) and other biopsychosocial responses, such as cardiometabolic risks (e.g., lowered heart rate variability [HRV], increased weight and blood pressure, and sleep disturbance), and emotional and/or cognitive dysregulation. Health inequities resulting from self- dysregulation are highest among minoritized and impoverished populations, who experience disproportionately higher exposure to ACEs, and early adolescence is a time in which experimentation with alcohol and drugs occurs. Although not all adolescents who experiment with drugs are later diagnosed with a substance use disorder, those who engage early (i.e., before the age of 14) and regularly are at greater risk. Youth with four or more ACEs may experience a unique type of adversity characterized by chronic, unpredictable stress shaping their perception of and responses to stress. However certain strategies, called Shift and Persist, can mitigate these exposures where one shifts their attention from adverse experiences to future-directed behaviors (e.g., healthy habit adoption, stress management), resulting in improved self-regulation and lower cardiometabolic risks. GRIT is a community health worker (CHW)-delivered psychoeducational health coaching intervention that promotes coping with high exposure to ACEs to regulate the stress response using self-regulation techniques and the development of healthy habits recommended by the California Surgeon General (e.g., supportive relationships, quality sleep, physical activity). We propose conducting a 2-arm Randomized Controlled Trial (RCT) (GRIT vs an active