The holy name of Krishna is so attractive that anyone who chants it — including all living entities, moving and nonmoving, and even Lord Krishna Himself — becomes imbued with love of Krishna. This is the effect of chanting the Hare Krishna maha-mantra.
Chaitanya Caritamrta, Antya Lila 3.268,
This process of chanting is the best process of self-realization in this age; therefore Lord Caitanya preached it so nicely for the benefit of all humanity.
Srimad Bhagavatam 3.24.35,
Hearing and chanting is the key to fix the mind on Krishna. When we are chanting, we need to just hear the sound vibration.
Hard earned money is kept in fixed deposit in the Banks and we are used to Credit Cards. Similarly deposit your faith in fixed deposit of the Lord, and chant every day.
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
To chant the holy name and dance in ecstasy is so easy and sublime that one can achieve all the benefits of spiritual life simply by following this process.
Srimad Bhagavatam 6.2.11,