Since it is individuals who form societies, right balancing of various systems and functions of all societies depends upon the capacity of individuals to balance their emotions in the right way and nurture right feelings. Sustained emotions of one generate feelings and feelings trigger one’s vision about requirements, which in turn create demands. It is these visions and demands of individuals in a society that mold social systems and functions. When social systems and functions are supportive, individuals get calm and pleasant life. It is highly cyclic.
Practice it and make it a habit. Then the nature will make it sustainable by triggering necessary genetic engineering!