In today's volatile world, leaders face challenges that can't be solved with quick fixes or technical expertise alone. What's needed is a deeper capacity to think, act, and lead developmentally.The Developmental Practitioner introduces the pioneering work of Otto Laske, whose Constructive Developmental Framework (CDF) equips leaders, coaches, and consultants with powerful tools to unlock human potential and redesign organizations for resilience and renewal.Through vivid explanations and practical insights, this book demonstrates how developmental practice enables leaders to hold complexity, navigate systemic change, and foster cultures of dialogue and growth. In an era of AI disruption and systemic fragility, it offers a timely invitation: to lead with wisdom, act with courage, and reimagine organizations as living systems that evolve with their people.