The chanting of the holy name of Krishna expands the blissful ocean of transcendental life. It gives a cooling effect to everyone and enables one to taste full nectar at every step.
Sri Chaitanya Caritamrta,
Antya Lila, 20.12
The holy name of the Lord should be chanted twenty-four hours daily.
Srimad Bhagavatam 4.24.70,
Srila Prabhupada
In this age, therefore, the only practical yajna is sankirtana-yajna, or chanting of the Hare Krishna mantra twenty-four hours a day.
Srimad Bhagavatam 4.13.25
Of sacrifices I am the chanting of the holy names [japa].
Bhagavat Gita 10.25
Detach the anchor of attachment towards collecting wealth and attach your mind in chanting & remembering Lord Krishna.