By Bhakti Vijnana Goswami
Bhakti is about knowing the heart of Krishna, knowing what is there in the heart of Krishna. Because this is the only thing which will please Krishna. If we do something which is against the heart or the intention of Krishna it will not be pleasing to Krishna. And bhakti as we know is anukulyena krsnanusilanam. This is the essence of bhakti, anyabhilasita sunyam.