Bhagavad-gītā informs, when one come to the platform of Brahman understanding, ahaṁ brahmāsmi, brahma-bhūtaḥ . . . this is called brahma-bhūtaḥ. Brahma-bhūtaḥ means a realization of one's self as Brahman.
At the present moment our realization is that, "I am this body," and because this body is produced in a certain country or a certain place or certain society, therefore I am identifying my body as American or as this or that. These are all designation.
When we actually come to the spiritual platform, brahma-bhūtaḥ platform, in that platform only, you can become joyful, brahma-bhūtaḥ prasannātmā (BG 18.54). As soon as you come to that platform of self-realization, then you will be joyful, immediately.
And you are seeking after that joyfulness, that pleasure, because by nature you are joyful. By nature . . . it is your nature. Just like a diseased man, that diseased condition is not his nature. Healthy condition is his nature; therefore he is trying to be healthy.
Every diseased man is trying how to get health, how to get health. Similarly, this position, this present consciousness of material existence, is full of threefold miseries.
It takes very long time to explain each and every word, but I tell you in summary, this life is subjected to three kinds of miseries, always—either bodily, mental, or some miseries inflicted by other living entities or by nature. So many things. At least one or two.
We must be under the subjugation of some kind of miseries. But if you become situated in your spiritual platform of life, brahma-bhūtaḥ, you immediately become joyful, prasannātmā. Brahma-bhūtaḥ prasannātmā (BG 18.54). And how one becomes prasannātmā? What are the symptoms? The symptoms are also stated, na śocati na kāṅkṣati: he has no more any demand for satisfying the senses, neither he has any lamentation for any loss.
This is prasannātmā, joyfulness. That joyfulness is your inherent quality as brahma, as soul. Ānanda-mayo 'bhyāsāt. You have heard of the Vedānta-sūtra. In that Vedānta-sūtra you'll find this sūtra, these codes are there. Ānanda-mayo 'bhyāsāt brahma.
The Vedānta-sūtra begins, athāto brahma jijñāsā. This life, this human form of life, is now meant for inquiring about Brahman. What is that Brahman, that is immediately answered: janmādy asya yataḥ (SB 1.1.1). Brahman is the supreme source from where everything emanates, or everything is born. So in the Vedānta-sūtra, and that is explained in the Śrīmad-Bhāgavatam.