Only Practical Yajna in Kali Yuga
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
Krishna’s Representation in Sacrifices
Of sacrifices I am the chanting of the holy names [japa].
Bhagavat Gita 10.25
Attaching Our Mind in Chanting and Remembering Lord Krishna
Detach the anchor of attachment towards collecting wealth and attach your mind in chanting & remembering Lord Krishna.
Chanting
If after years of chanting we still have no taste then we have some problem, either with hearing the Holy name or with our level of surrender.
Effect of Chanting
One need only chant the Hare Krishna mahamantra. Everyone engaged in the practice of chanting the Hare Krishna mahamantra will be completely cleansed, from the core of his heart, and be saved from the cycle of birth and death.
Srimad Bhagavatam 7.6.1,
Srila Prabhupada.
Becoming A Perfect Chanter
Drink more and you become a drunkard. Similarly chant more and you become a perfect chanter.