The basic problem is social adaptation and biologic survival. The basic solution is for people to understand the nature of their own biological emotional maturity, to work toward it, to help the childrenin their development toward it.
Human suffering is mostly made by man himself. It is primarily the result of the failure of adults, because of improper child-rearing, to mature emotionally. Hence instead of enjoying their capacities for responsible work and love, they are grasping, egocentric, insecure, frustrated, anxious and hostile.