"The strong conviction that one will certainly receive the favor of the Supreme Personality of Godhead is called in Sanskrit asa-bandha. Asa-bandha means to continue to think, 'Because I'm trying my best to follow the routine principles of devotional service, I am sure that I will go back to Godhead, back to home.'
"In this connection, one prayer by Rupa Gosvami is sufficient to exemplify this hopefulness. He says, 'I have no love for Krishna, nor for the causes of developing love of Krishna -- namely, hearing and chanting. And the process of bhakti-yoga, by which one is always thinking of Krishna and fixing His lotus feet in the heart, is also lacking in me. As far as philosophical knowledge or pious works are concerned, I don't see any opportunity for me to execute such activities. But above all, I am not even born of a nice family. Therefore I must simply pray to You, Gopijana-vallabha (Krishna, maintainer and beloved of the gopis). I simply wish and hope that some way or other I may be able to approach Your lotus feet, and this hope is giving me pain, because I think myself quite incompetent to approach that transcendental goal of life.' The purport is that under this heading of asa-bandha, one should continue to hope against hope that some way or other he will be able to approach the lotus feet of the Supreme Lord."
(Nectar of Devotion, Chapter 18)