38. By meditating on the knowledge 'I am' it gradually settles down at its source and disappears, then you are the Absolute.

Your entire focus should be on the knowledge 'I am'. Constantly, without break, keep meditating on it. When an object remains in focus for a prolonged period there is a good chance it will disappear, that is bound to happen as that is its opposite. From just 'being' to 'non-being' from 'I am' to 'I am not', when this happens nothing remains anymore, then you are the Absolute, silent , still, without any movement or experience.