So Kṛṣṇa says, "I am that taste." Similarly He says prabhāsmi śaśi-sūryayoḥ: "The light in the sun, in the moon, that I amthat light." In this way He has described. So when one is highly elevated in Kṛṣṇa consciousness, in everything, in every action and every phenomenon he will see only Kṛṣṇa. That is the perfection of Kṛṣṇa consciousness.
So that is being taught in the Ninth Chapter, and in this verse, man-manā bhava mad-bhakto, "Always think of Me," this is the sum and substance of all spiritual advancement. What is that? Smartavyaṁ satato viṣṇuḥ. One should always be absorbed in the thought of Viṣṇu, the Supreme Personality of Godhead. That is called samādhi. That is perfection of yoga. The yoga system is the practice of the most lower class of men. I mean to say spiritually, not materially. Because their mind is so much distracted from here and there, they have to concentrate the mind by practice and focus the mind on Viṣṇu. That is the yoga perfection, real. Now they are manufacturing so many other things, but the real yoga practice is this, that you have to draw your attention from everything and focus the same on Viṣṇu form. That is yoga system.