Our sadhana bhakti must be executed with a desire to increase our bhakti. If we forget to execute our sadhana bhakti in this consciousness, then we must daily "hear" as well. Therefore, "every day" we must "practice" hearing, chanting, and remembering Krishna. Whatever other duty we may perform in accordance with the nine processes of bhakti is ultimately meant to culminate on this point—we must remember Krishna. On the platform of "practice", or sadhana bhakti, we must therefore "daily" practice remembering Krishna.
(Collected Letters to My Disciples, Vol 3, Pg 59, 2nd Paragraph)