Book excerpt: A wealth of hands-on, practical resources for practitioners working with young men in correctional and therapeutic settings Perfect for practitioners working with male, transgender, and nonbinary adolescents in mental health clinics, juvenile correctional facilities, and residential and outpatient treatment centers, A Young Man's Guide to Self-Mastery Workbook offers practical resources to facilitate effective, trauma-informed, and gender-responsive treatment. The Workbook is intended as a companion to A Young Man???s Guide to Self-Mastery, a volume that addresses the impact of adverse life experiences, substance use, and socialization by explaining the theoretical and real-world connection between trauma and substance misuse. It contains hands-on tools and exercises, templates, activities, and reflections that assist young men in the treatment process.