Lord Krishna stresses the importance of remembering Him. One’s memory of Krishna is revived by chanting the maha-mantra, Hare Krishna. By this practice of chanting and hearing the sound vibration of the Supreme Lord, one’s ear, tongue and the mind are engaged. This mystic meditation is very easy to practice, and it helps one attain the Supreme Lord. - Bhagavad Gita, 8.8. Purport 27.01.