The purpose of meditation practice is not enlightenment; it is to pay attention even at unextraordinary times, to be of the present, nothing-but-in-the-present, to bear this mindfulness of now into each event of ordinary life.
Prayer never touches us as long as it remains on the surface of our lives, as long as it is nothing but one more of a thousand things that must be done. It is only when prayer becomes "the one thing necessary" that real prayer begins. Prayer begins to take on its full dimensions only when we begin to intuit that the subtle nothingness of prayer is everything.