Arjuna said frankly that he was unable to practice this yoga system. And what we are, in comparison to Arjuna? So this aṣṭāṅga-yoga system is not possible at all in this age. If you are satisfied by learning some sitting posture, artificially, that may give you some chance of good exercise of the body. You can keep good health. But there is no chance of spiritual realization by aṣṭāṅga-yoga practice in this age.
So Śukadeva Gosvāmī said śamena. Śama means manasa-niyamam, controlling the mind. The mind's business is acception . . . acceptance and rejection. This is mind's business. Even one is very elevated, the mind's business is mind's business. Mind will accept something, "It is very good," and next moment it will reject. That is mind's business.
But you have to fix up your mind in something which you cannot reject. That is only the lotus feet of Kṛṣṇa. If you fix up your mind on the lotus feet of Kṛṣṇa, then your mind cannot go elsewhere. You practice it and you'll see it. Sa vai manaḥ kṛṣṇa-padāravindayoḥ (SB 9.4.18).
Therefore Ambarīṣa Mahārāja fixed up his mind always . . . our Kṛṣṇa consciousness movement means we are teaching our student how to fix up the mind always in Kṛṣṇa, some way or other. That is the first-class yoga system. And Kṛṣṇa also advise . . .
(break) . . . feet, and pray, bhajate: "Kṛṣṇa, I am Your eternal servant. Kindly again engage me in Your service. Somehow or other, without being engaged in Your service, I have been dragged to the service of māyā.
Service I am going. I am rendering service. Because I am eternal servant, therefore my serving process is going on. But where it is going on? I am serving my lust, I am serving my anger, I am serving my greediness. So that means, in one word, I am serving my sense gratification. So kindly help me. Instead of serving my sense gratification, let me serve Your sense gratification."
That is yoga. That is first-class yoga. Pray always. Fix up your mind in Kṛṣṇa's lotus feet, and pray that "I am eternal servant. Now I'm engaged in the service of my sense gratification, and You please help me, now I have come to my senses, to engage me in Your sense gratification." The business is there—sense gratification—but Kṛṣṇa consciousness means instead of satisfying one's own senses, one should be ready to satisfy the senses of Kṛṣṇa. That is Kṛṣṇa consciousness. It is not very difficult.