There are many who develop the habit of worrying about things. The least little thing worries them very much. They cherish whatever little sorrow they have; it is a plant they water and nourish. And so many, directly or indirectly, consciously or unconsciously, become accustomed to illness, an illness that is more an intoxication than a reality. And as long as a man holds the thought of that illness he sustains it, and the illness settles in his body and no doctor can take it away.