The essence of love and unity is in the desire, when each one pleases his friend, there is no disparity of desire among them, and all are incorporated in one desire, by which they are incorporated in the upper desire, which is the purpose of the unity (Rabbi Nachman of Breslev, Likutei Halachot [Assorted Rules]).
There is no other way to come to this state. We just need to turn a blind eye to everything else as secondary and do only that! Throw yourself into it, and you will succeed!
From the International Convention “Rising Above Ourselves” 1/6/22, “Approaching the Creator Through the Network of Connections Between Us” Lesson 1