A human being wants to live with happiness, prosperity, relationships and continuity of these three. A human being wants happiness in the self, trust and respect in relationships, self-dependence in job, fearlessness in society and co-existence in nature. On the other hand sustaining the body is sufficient for an animal. We also see that physical facilities (Food, Cloths, Shelter etc.) are necessary for human being but are not sufficient to live. In case of animals physical facilities are necessary and sufficient. Due to lack of understanding in a human being of himself, he lacks the knowledge of what he really wants and how can he get that. This lack of understanding is the root cause of all the human problems. So what can ensure a human being what he really wants? It is right understanding in a human being at the level of self, family, society and nature which can ensure it. This is a big difference between an animal and a human. An animal just wants to live.