In his 25 years as an emotion scientist, he has developed a remarkably effective plan to improve the lives of children and adults - a blueprint for understanding our emotions and using them wisely so that they help, rather than hinder, our success and well-being. The core of his approach is a legacy from his childhood. His prescription for healthy children is a system called RULER, a high-impact and fast-effect approach to understanding and mastering emotions that has already transformed the thousands of schools that have adopted it.