"So bhakti is so nice thing that very easily you can get favor of the Supreme Person. And if Kṛṣṇa is pleased upon you, then what remains? Everything you get. Everything you get. Yasmin vijñāte sarvam eva vijñātaṁ bhavanti (Muṇḍaka Upaniṣad 1.3). Easiest way to please Kṛṣṇa... You don't require much money, much education, and nothing of the sort. Simply you require your heart: 'O Kṛṣṇa, You are my Lord. You are my master eternally. I am Your servant eternally. Let me be engaged in Your service.' That is Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ (devotees chant) Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare. This is the meaning of Hare Kṛṣṇa mantra: 'O Kṛṣṇa, O energy of Kṛṣṇa, I am Your servant. Somehow or other I have now fallen in this material condition. Kindly pick me up and engage me in service.' Ayi nanda-tanuja patitaṁ kiṅkaraṁ māṁ viṣame bhavaṁ budhau. That is Caitanya Mahāprabhu's teaching us. Bhavaṁ budhau. This material world is just like a great ocean, bhava. Bhava means repetition of birth and death, and āmbu means āmbudhau, means in the sea, in the ocean. So we are struggling hard for existence in this ocean. So Caitanya Mahāprabhu says, ayi nanda tanuja patitaṁ kiṅkaraṁ mām: 'I am Your servant eternal. Somehow or other I have fallen in this ocean and struggling. Pick Me up.' Ayi nanda-tanuja patitaṁ kiṅkaraṁ mām viṣame bhavāmbudhau kṛpāya. By Your causeless mercy...
ayi nanda-tanuja patitaṁ kiṅkaraṁ māṁ viṣame bhavāmbudhau
kṛpāya tava pāda-paṅkaja-sthita-dhūlī sadṛśsaṁ vicintaya
(CC Antya 20.32, Śikṣāṣṭaka 5)
This is bhakti-mārga, devotional service, to become very humble, meek, always pray to Kṛṣṇa, 'Kindly consider me as one of the particle of the dust of the lotus feet of Your Lordship,' this very simple thing. Man-manā. In this way think of Kṛṣṇa, become His devotee, offer obeisances, and whatever patraṁ puṣpaṁ, little flower, water, you can provide, offer to Kṛṣṇa. In this way live very peacefully and be happy."
(Srila Prabhupada Lecture, Mayapur, March 1, 1977)