The Antakarana meditation is a practice of withdrawing the senses (Pratyahara), watching the mind, and becoming aware of the witnessing consciousness (Purusha). The Bhagavad Gita mentions that we must learn to identify with the Knower of the Field. The field being the outer world and our thinking/ego mind, this meditation leads us to the Knower... that witnessing Self that can objectively view the field from a place of equanimity. From the Knower, this practice is capped off with a Gratitude Meditation to ground aspects of the witness into the body and heart.