It is really the balancing of individual lives by individuals that provides a balanced life to society as a whole. The quality of a balanced social life is heavily depended upon how efficient, effective and right is the balancing of individual lives. That is why we have to start all social reforms from individuals. A calm and pleasant life is possible only when majority of individuals in a society succeeds in maintaining a balanced life.
Practice it and make it a habit. Then the nature will make it sustainable by triggering necessary genetic engineering!