The human mind, so involved in worldly pursuits, finds it very difficult to withdraw itself despite getting knocked about by the world. A mind, thus preoccupied, knows not how to withdraw. At such times, only God or a man of discrimination can help us see light.
The Sanatkumaras approached Lord Brahma, the Creator, with such a problem. Lord Brahma confessed to being too preoccupied, and therefore, had no solution to offer. The Supreme Lord then appeared as 'Hamsa' - the Swan, and gave the knowledge of the Truth. This episode of Shrimad Bhagavatam is called Hamsa Gita.
The lucid commentary by Swami Tejomayananda helps us understand the problem and seek a practical solution, thereby giving us a head start towards our quest for Truth.