The purpose of Śrīmad Bhāgavatam is to glorify the Supreme Absolute Truth, known as Śrī Kṛṣṇa, for the benefit of the suffering humanity. Śrī Vyāsa himself calls this Purāṇa the ripened fruit of the Vedic tree and compares it to the personification of rasa, or devotional relish. It is to be tasted by the rasikas, the connoisseurs of rasa, and relished by the sahṛdayas, the sober-hearted people or those whose hearts are imbued with sattva (SB 1.1.3)
Have you ever seen a camel grazing? It goes here and there for food and it never comes back. Similarly, our mind is like a camel mind, running here and there and it never comes home. Our mind is going somewhere all time time, getting the food of raga (like) and dvesha (dislike). That is its food. It is getting its energy from that. We are always moving in the grooves of like and dislike. We have to bring it back from there. That is the sadhana. Are you in yourself or are you somewhere else?