Rupa Gosvami says that when he chants the two syllables “Krish-na,” his senses become stunned, and the Lord, in the form of the holy name, dances in the courtyard of his heart. He immediately experiences the presence of the Lord from these two syllables. Thus, certainly some great pleasure is derived from chanting the holy name of the Lord. It is the highest pleasure. There is no higher pleasure than the constant chanting of the holy name. The Srimad-Bhagavatam states that those persons who are constantly engaged in glorifying the Lord transcend all the miseries of the material world. And by becoming absorbed in the holy name of the Lord, they give up identification with this material body. Srila Prabhupada explains that one can understand that he is advancing by the degree that he loses his attraction to the material world and the material body.
Caitanya Caritamrita Lectures Book, Adi Lila 7.62-92 Donetsk—June 17, 2000, Page 59