The purport is that the living entity is constitutionally part and parcel of the Supreme Lord; the Lord can be compared to the sun, and the living entities can be compared to molecules of sunshine. Under the spell of illusory energy, the spiritual spark is almost extinguished, but by practical devotional service one can revive his natural constitutional position. When one practices devotional service, it should be understood that he is returning to his original and normal liberated position. Devotional service can be practiced with one's senses under the direction of a bona fide spiritual master.
One begins spiritual activities for advancement in Kṛṣṇa consciousness by hearing. Hearing is the most important method for advancement, and one should be very eager to hear favorably about Kṛṣṇa. Giving up all speculation and fruitive activity, one should simply worship and desire to attain to love of God. That love of God is eternally existing within everyone; it simply has to be evoked by the process of hearing. Hearing and chanting are the principal methods of devotional service.
Devotional service may be regulative or affectionate. One who has not developed transcendental affection for Kṛṣṇa should conduct his life according to the directions and regulations of the scriptures and the spiritual master. In Śrīmad-Bhāgavatam (2.1.5) Śukadeva Gosvāmī advises Mahārāja Parīkṣit: