The mind, the mind is always flying to this, to that. So one has to practice to concentrate the mind into the form of the Supreme Lord Śrī Kṛṣṇa always, or in the sound, in His name which is made easier. Instead of concentrating my mind—my mind may be very restless, going hither and thither, but I can concentrate my ear into the sound vibration of Kṛṣṇa and that will also help me.