For a successful meditation practice, everything must be perfect. The layout of the room must be set up in such a way as to encourage a peaceful and serene mind state. The time of day must be right, so that the distractions of the world do not interfere with the meditation. The mindset that you go into when you start using your meditation techniques must be right, or else the whole practice is lost. And most of all, the posture must be right. If you do not sit in the right position, with the back erect but relaxed, the eyes gently closed, the muscles of the face loose, and the hands folded, you will never get the maximum benefit from your meditation practice.