So you have to employ your senses in the service of the owner of the senses. Kṛṣṇa is the owner of the . . . Hṛṣīkeśa, the Lord of the senses. That people they do not know. I am thinking that this is my eye, these are my eyes. But actually these are explained in the Upaniṣads: Just like the sunshine. When the sun sees you, you can see the sun. Now at night the sun does not see you, so you cannot see the sun. You cannot see the sun, you cannot see anything, because the sun does not see you. Similarly the Upaniṣad says when Kṛṣṇa sees you or Kṛṣṇa sees, then you can see.
Just like I have got these spectacles. The spectacle is not seeing; my eyes are seeing, therefore spectacle is seeing. Similarly, actually all the senses are acting because Kṛṣṇa is acting. As soon as Kṛṣṇa desires that these senses will not work, it will not work. So in spite of your claim that, "This is my hand," "This is my eyes," "This is my mouth," it will not work.
So the people, they do not know. The bhakti-yoga practice says hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate (CC Madhya 19.170).
When you employ your senses in the service of the proprietor of the senses, that is called bhakti. That is called bhakti. So that is real yoga, bhakti-yoga. Otherwise artificially if you try, one or two may be successful, but mostly they will fail.