So whole Vedic civilization is to reduce this propensity, kāmāturam. That is Prahlāda Mahārāja's recommendation. Because if we remain kāmāturam, sexually inclined, then we'll be subjected only to these processes, harṣa-śoka-bhayaiṣaṇārta. In this way we shall be always disturbed. And it will be not . . . Disturbed mind, you cannot think of the Absolute Truth. That is not possible. The mind must be peaceful. But there is one very easy method to control the mind from these disturbances. What is that? The yoga system means the control the disturbed mind. Yoga indriya-saṁyamaḥ. Real yoga means to control the mind and the senses. That is yoga. Because without controlling the mind and the senses, there is no question of spiritual advancement. That is not possible. Without controlling the mind, there is no question of spiritual advancement.
Therefore Kṛṣṇa advised to Arjuna that "You practice yoga," in the Sixth Chapter, "so that you'll be able to control the mind." But Arjuna said that "Control the mind is very difficult for me, Kṛṣṇa. I cannot practice this yoga system." Cañcalaṁ hi manaḥ kṛṣṇa pramāthi balavad dṛḍham (BG 6.34): "Mind is very restless, and it is very difficult to control." Tasyāhaṁ nigrahaṁ manye vāyor iva su-duṣkaram (BG 6.34): "I think to control the mind is still more difficult than to control the wind." Nobody can control the wind. So Kṛṣṇa . . . Arjuna said, "Even though I am able to control the wind, I cannot control my mind, it is so strong." So Kṛṣṇa recommended . . . Kṛṣṇa not discouraged Arjuna.