We say, “A good father is not a good father.” Do you understand? One who thinks he is a good father is not a good father; one who thinks he is a good husband is not a good husband. One who thinks he is one of the worst husbands may be a good one if he is always trying to be a good husband with a single-hearted effort. If you find it impossible to sit because of some pain or some physical difficulty, then you should sit anyway, using a thick cushion or a chair. Even though you are the worst horse you will get to the marrow of Zen.