This handbook is based on the premise that in order for sustainability to be sustainable, a profound psychological transformation has to take place at the individual and collective level. Focusing on the practice of environmental sustainability, this handbook will explore the application of sustainability in a wide variety of contemporary contexts—from economics of consumption and growth to government policy, sustainable cities, and sustainable planet. The editors believe that the way to achieve sustainable, harmonious living in all spheres is through lived or engaged sustainability at the personal, team, and organizational levels.