Japa Meditation- Hare Krishna.

In the beginning of creation, the Lord of all creatures sent forth generations of men and demigods, along with sacrifices for Viṣṇu, and blessed them by saying, “Be thou happy by this yajña [sacrifice] because its performance will bestow upon you everything desirable for living happily and achieving liberation.”
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“In this Age of Kali, people who are endowed with sufficient intelligence will worship the Lord, who is accompanied by His associates, by performance of saṅkīrtana-yajña.” Other yajñas prescribed in the Vedic literatures are not easy to perform in this Age of Kali, but the saṅkīrtana-yajña is easy and sublime for all purposes, as recommended in Bhagavad-gītā also (9.14).
Source : https://vedabase.io/en/library/bg/3/10/