One achieves bhakti [love of God] by hearing and chanting about the Supreme Lord's special qualities, even while engaged in the ordinary activities of life in this world.
The path of bhakti is personal, it is not ritualistically automatic.
In comparison to any other yoga system, a jiva can engage in a totally reciprocal relationship with Krishna within the bhakti yoga system.
Devotional service is so simple, but devotees because of their material inclinations make it complicated.
A devotee doing sense gratification out of material conditionings, if keeps on listening to pure devotees, soon becomes disgusted of sense gratification and gives it up, and so attains the pure devotion to krishna.
Bhakti cannot be attained, it is a gift.