The Bhagavad-gītā's process of purifying consciousness is the process of fixing one's mind on Kṛṣṇa by talking of His transcendental activities, cleansing His temple, going to His temple, seeing the beautiful transcendental form of the Lord nicely decorated, hearing His transcendental glories, tasting food offered to Him, associating with His devotees, smelling the flowers and tulasī leaves offered Him, engaging in activities for the Lord's interest, etc. No one can bring the activities of the mind and senses to a stop, but one can purify these activities through a change in consciousness.