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.
Loving devotional service to the Lord begins with hearing about the Lord.
Srimad Bhagavatam 1.7.7,
If we chant and hear enthusiastically, then memory will come.
Our mind is immensely effected by what we hear.