Staying fit and active as long as possible is something that most people wish for. Even if the environmental conditions cannot be controlled, there are strategies that can enable us to age happily. This book guides the reader through the scientific findings in psychology, medicine, and cognitive science, outlining the framework conditions for successful aging. It then outlines the different strategies can be applied to all areas of life. Following chapters deal with the issues of health, social relationships, and mental fitness, and provide recommendations on what can be done early on, but also at an older age, to actively and enjoy this phase of life. This book ultimately provides the reader with practical guidelines that can be incorporated into everyday life. Target Group: For the general public, psychologists, and medical professionals.