RecruitingBehavioural interventionAbriendo Caminos: Engaging LatinosThe goal of this clinical trial is to learn if a culturally responsive peer-delivered motivational interviewing intervention can enhance mental health treatment engagement in Latinos with serious mental illness. The main questions it aims to answer are: * How feasible is it to recruit 30 Latinos with serious mental illness into a 6 week treatment engagement intervention? * How acceptable is the intervention to Latinos with serious mental illness? Participants will: * Receive six sixty-minute sessions * Complete weekly measures, along with pre-, post-, 30-day, and 60-day post-intervention assessments