Very often people tell me that during the day they do not have such difficulty as at the moment that they want to concentrate: at that time the mind jumps, at other times it moves. This is because the mind is an entity. It becomes restive. It feels as a wild horse would feel: "Why should I be troubled by you?" At the same time this mind is meant to be an obedient servant. This body is meant to become your tool with which to experience life. If mind and body are not in order, if they do not act as you wish them to, then you cannot hope for real comfort, for real happiness in this world.