Substance use in Kenyan schools and institutions is a growing crisis, threatening education, health, and futures. More than one in four students have used alcohol, cannabis, or prescription drugs. Traditional responses—awareness campaigns, guest speakers, and punishment—have failed to reverse the trend. This evidence-based guide offers a proven alternative. Drawing on doctoral research in Uasin Gishu County, Dr. Margaret Makale Chepgimis, PhD, reveals that self-awareness and self-management are the strongest protective factors against substance use. Inside this guide, you'll find twenty low-cost classroom strategies, a clear three-phase action plan for schools, tools for teachers working without support, effective ways to engage parents, and simple daily practices that create lasting change. Written for educators, counsellors, and youth professionals, Building Emotional Shields equips Kenyan institutions with the inner skills students need to resist peer pressure and make healthier choices.