An applied approach to the training of trainers who, in turn, train teams to implement psychosocial and mental health interventions in developing countries affected by emergencies. The film On the Road to Peace of Mind, used in conjunction with this guidebook, presents an applied Training of Trai- ners (TOT) approach. They are designed to educate trainers to prepare teams to provide psychosocial and mental health assistance for populations in developing countries affected by wars, conflict, natural disasters and other emer- gencies. The film and guidebook offer a practical framework for the training of trainers that enables psychosocial and mental health workers to train others. Through modifications for local culture and context, the framework presented can be used in training programmes on the road to peace of mind around the globe.