Introversion of the mind and the witness. Intellectual knowledge is not helpful. Discriminative wisdom comes only to bhaktas. Bhakti means love of god. Unless you turn your mind to him he won´t reveal himself to you. The highest teaching in Vedānta is not this not this. Q + A. Ira and his teacher. Mumukshuttva.
Swami Bodhichitananda speaks about how you can control your mind. As the mind obscures the light of the Higher Self, its control can lead to the Highest Self Realisation. Short Interview. Swami Bodhichitananda teaches seminars at Yoga Vidya Germany. More about yoga and meditation at https://www.yoga-vidya.de/english