Actually, it is very difficult to control the mind. So artificially, by controlling the breathing system, there is the process, but still, it is difficult. As I explained yesterday, even a great yogi like Viśvāmitra, he also failed. There are many instances. There was another, Saubhari Muni. He was practicing yoga system within the water. And as soon as he was little agitated by the fish, he wanted to come out and marry and one king's daughter. He wanted to marry all the eight daughters. So there are many instances like that. It is very difficult to control the mind.
But our process, as it is stated here, that ātma-saṁyama-yogāgnau. Ātma-saṁyama. Saṁyama, control. The mind is the principle sense. Indriyāṇi parāṇy āhur indriyebhyaḥ paraṁ manaḥ (BG 3.42). Mind is the central figure of all the senses. Just like madman. Because he cannot fix up his mind, he cannot work properly. Therefore he is called madman. So our process is that we cannot control the mind. But if we engage the mind on the lotus feet of Kṛṣṇa, then everything is controlled. Kṛṣṇa will help. If some way or other, you engage your mind at the lotus feet of Kṛṣṇa, sa vai manaḥ kṛṣṇa-padāravindayoḥ (SB 9.4.18). then gradually everything will be controlled.
There is another version that sevonmukhe hi jihvādau (Brs. 1.2.234). Jihvādau, to control the jihvā. The jihvā means the tongue. It is very difficult to control the jihvā. People do not know it, but actually this is there. Everyone becomes a servant of the senses just beginning from the tongue. They eat anything and everything. Therefore they cannot control others senses also. This is the experience of big, big yogis. Therefore in the yoga practice, yama-niyama... In the yoga practice also, it is forbidden, not to allow the tongue to eat anything and everything, no. That is not possible. Similarly, we also ask our devotees not to allow your tongue to touch anything except kṛṣṇa-prasādam. Tongue's two business: eating, tasting something, and vibrating sound. So if we can control the tongue not to touch anything which is not offered to Kṛṣṇa, and if we do not allow the tongue to talk anything except Kṛṣṇa, Hare Kṛṣṇa mahā-mantra, then you become the greatest yogi. The greatest yogi. Simply two things. Of course, we have to eat. That's a fact. Without eating, we cannot exist. So eat. We have got so many nice things, offered to Kṛṣṇa. We offer to Kṛṣṇa all nice things.
As Bhaktivinoda Ṭhākura says, kṛṣṇa baṛo doyāmoy, koribāre jihwā jay, swa-prasād-anna dilo bhāi. Bhaktivinoda Ṭhākura, he was a gṛhastha, practical. He experienced. He said, śarīra abidyā-jāl: "This body, material body, is a network of ignorance." Śarīra abidyā-jāl. Just like a network. If you are put into a net and bound up and thrown into the ocean, then what is your condition of life, just imagine. Similarly, we, pure souls, we have been put into this network of material body, and we are thrown into the ocean of nescience. This is our position, struggle for existence. How to get out of the network? How to get out of the ocean? This is... Manaḥ ṣaṣṭhānīndriyāṇi prakṛti-sthāni karṣati (BG 15.7). This is our position.
So Bhaktivinoda Ṭhākura says this body is the network of ignorance, simply sense gratification. "I shall eat this. I shall eat that. I shall hear this. I shall..." The ear is engaged in hearing nice cinema songs, and the tongue is engaged, going to the restaurant, so many so-called palatable dishes. Similarly, other senses, they are engaged. So the... According to bhakti-yoga system, the first control is recommended to the tongue. That is said, that ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136).
Now, we receive knowledge through the indriyas, but if the indriyas are impure—senses, they are impure—they cannot understand what is Kṛṣṇa. Ataḥ śrī-kṛṣṇa-nāmādi, na... Beginning. Because beginning is śravaṇam. Bhakti-mārga begins by hearing.
Now, what is śravaṇam? Chanting. If there is chanting or there is some speaking, then we can hear. That is recommended by Śrī Caitanya Mahāprabhu, that simply hear. There are many places, recommended, that "Hear." So but it is said, ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). These present blunt senses, material senses, cannot receive even this chanting of Hare Kṛṣṇa mantra. They say, "This is nuisance." Bhagavān says in the Bhagavad-gītā, catur-vidhā bhajante mām: "Four classes of men who begins bhagavad bhajana," sukṛtina, "those who are pious..." But the modern leaders, they say, "This bhajana nuisance." This is our misfortune. Satataṁ kīrtayanto māṁ yatantaś ca dṛḍha-vratāḥ (BG 9.14). These are the explanation in the Bhagavad-gītā.