Theories that diseases are caused by mental states and can be cured by will power, are always an index of how much is not understood about the physical terrain of a disease.
Health consists of having the same diseases as one's neighbors.
The greatest disease in the West today is not TB or leprosy; it is being unwanted, unloved, and uncared for. We can cure physical diseases with medicine, but the only cure for loneliness, despair, and hopelessness is love. There are many in the world who are dying for a piece of bread but there are many more dying for a little love. The poverty in the West is a different kind of poverty -- it is not only a poverty of loneliness but also of spirituality. There's a hunger for love, as there is a hunger for God.