Revised edition: 20 additional methods, three new case studies, and a new chapter introducing life-centered design. This book introduces the reader to the changing role of design as a way of thinking and a framework for solving complex problems, as well as for achieving systemic change. It documents 80 methods covering all stages of a design process, providing practical guidance for applying the methods to a variety of projects. The methods are complemented by seven case studies showing their application in different fields, from interface design for autonomous vehicles to managing health and well-being. Free templates and resources, available at designthinkmakebreakrepeat.com, make this book an excellent resource for both design educators and professionals leading workshops in their organizations or seeking inspiration to transform their practice. In this revised edition, the authors look beyond human-centered design and provide an introduction to life-centered design. This expanded focus is enhanced through design methods that consider the broader ecosystem in which products and services are used, including the use of natural resources, ethical issues, and the long-term impact of design decisions.