One way for attaining Bhakti is by repeating the name of God a number of times. Mantras have effect: the mere repetition of words.... To obtain Bhakti, seek the company of holy men who have Bhakti, and read books like the Gita and the Imitation of Christ; always think of the attributes of God.
Swami Vivekananda (2015). “The Complete Works of Swami Vivekananda”, p.2616, Manonmani Publishers