This book is about how psychology matters for development, health and organizations. Development is a process, which consists of four well-marked stages-survival, growth, development and evolution. This book can help in understanding all these stages and in chalking out a suitable action plan. Similarly, the readers will find this book to be useful in realizing that there is a seamless connection of mind, body and spirit, and it is possible to maintain a balance among these three. Organizational development plan is the process through which an organization develops the internal capacity to be most effective and sustainable. Researchers, after going through this book, will realize that only a particular change process can develop the internal capacity and a particular kind of end results.