Sri Sri Muralidhara Swamiji
Our mind would be filled with Bhakthi one day. One day, it would yearn for wordly desires. One day, it would hate all. The Mahamaya (greatest illusion), the mind, can be brought under control slowly and steadily by Namakirtan alone.
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji