This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book provides the people with an understanding of what motivates people to accept or reject change, providing an approach to managing change that works with individuals to make the choice to change and determines the way that change happens. It traces how change management practices have developed over the course of the twentieth century on the basis. The book looks at among others, the work of Herbert Mead, the early twentieth-century philosopher, sociologist and psychologist. It discusses the development of mainstream theories of change management from the advent of scientific management theory. The book deals with the organisation 'as-is', that is, as a group of interacting individuals sharing a common goal of delivering a product or service. It considers how organisations use the emerging patterns to improve their competitiveness.