From Vijaya das,

I was distributing in the airport and it was becoming very frustrating, no one would take a book. Then I started to chant a verse that usually comes to mind during these times:

tat te ‘nukampAM susamIkSamANo
bhunjAna evAtma-kRtaM vipAkam
hRd-vAg-vapurbhir vidadhan namas te
jIveta yo mukti-pade sa dAya-bhAk

Prabhupada’s explanation found in the purport of SB 4.6.46:

The purport of this verse is that when a devotee is in a calamitous condition he takes it as a benediction of the Supreme Lord and takes responsibility himself for his past misdeeds. In such a condition, he offers still more devotional service and is not disturbed. One who lives in such a disposition of mind, engaged in devotional service, is the most eligible candidate for promotion to the spiritual world. In other words, such a devotee’s claim for promotion to the spiritual world is assured in all circumstances. (SB 10.14.8)

After meditating on this verse I realized what my problem was, “I’m too attached to the result.” But, fortunately Krsna humbled me. Then I began to pray to Krsna to help me become attached to just trying to please Him.
Immediately I felt enlivened by this meditation. Thus, a few minutes later I met a man from Malaysia named Siva who expressed great joy upon seeing the Bhagavad Gita that I had presented to him. Then he went on to tell me what had happened to him. Twelve years ago he visited the temple in Kuala Lumpur and was very happy to speak to the devotees and experience the nice atmosphere. That night Prabhupada came to him in a dream. Prabhupada told him to hand him his beads, he did. Prabhupada then chanted one round on his beads, handed them back to Siva, and said, “Now chant, “Hare Krsna.”

Since that time Siva has chanted Hare Krsna every day. He also purchased some books from me to add to his collection, he has the Srimad Bhagavatam and other books of Srila Prabhupada. After this transcendental experience practically every person I spoke to took a book, Krsna is very kind.

I highly recommend that all devotees that don’t know this verse learn it, since it is the only verse that I know of where Prabhupada writes in the Nectar of Devotion, “This verse is the guide of all devotees of the Lord.”

Hoping this meets you well, I remain
Your servant,
Vijaya dasa