Keep up your endeavor for engaging in devotional service. Chanting the Holy Names is a vital point of devotional service. Be sure to improve on your quality of chanting. All other services are strongly supported by chanting of the Holy Name.
Of the nine processes of devotional service, the most important is to always chant the holy name of the Lord. If one does so, avoiding the ten kinds of offenses, one very easily obtained the most valuable love of Godhead.
Chaitanya Caritamrta Antya Lila 4.71
The chanting of the holy name of Krishna expands the blissful ocean of transcendentak life. It gives a cooling effect to everyone and enables one to taste full nectar at every step.
Antya Lila 20.12,
Simply by chanting the holy name of Krishna – Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare – a devotee of the Lord can approach the supreme destination easily and happily, but this destination cannot be approached by any other process of religion.
Chanting is the most powerful way to become Krsna conscious. In fact, we cannot become fully Krsna conscious without chanting good quality rounds daily. Despite this fact, we often don’t take our Japa as seriously as we should.
99% of our spiritual advancement depends on the quality of our chanting.