So for advanced devotee everything is possible, as described by this gentleman. But that is not for everyone. That is not a common thing. Exceptional. For the common person, as Caitanya Mahāprabhu has advised and as He has practically shown in His life, that is devotional service in separation: "Where is Kṛṣṇa?" Śūnyāyitaṁ jagat sarvaṁ govinda-viraheṇa me. "I am seeing everything vacant because I cannot see Kṛṣṇa." The same thing was followed by the Gosvāmīs. He rādhe vraja-devike ca lalite he nanda-sūno kutaḥ: "Where you are? O Rādhārāṇī, O Kṛṣṇa, O the gopīs, where you are?" He rādhe vraja-devike ca lalite he nanda-sūno kutaḥ śrī-govardhana-kalpa-pādapa-tale kālindī-vane kutaḥ. Govardhana-kalpa-pādapa-tale: "Either on the valley of the Govardhana Hill or on the bank of the Ganges. Where you are, all?" Seeking. Ghoṣantāv iti sarvato vraja-pure khedair mahā-vihvalau. One should be mad after seeking Kṛṣṇa—"Where You are? Where You are?" Not that "I have seen." That is not bhajana. Bhajana means how to become mad after Kṛṣṇa. One who has once heard the tinkling sound of His ankle bell, He'll be mad after Him—"Where You are? Where You are? Where You are?" Not that hearing and becoming engaged in the family affairs. No. That is not possible. One who has seen, one who has heard, he'll become mad—no more interest in this material affairs. That is the sign. We can say. Of course, if you are experienced devotee... But so far we see of Śrī Caitanya Mahāprabhu and His immediate successors, Gosvāmīs, they are mad after Kṛṣṇa. They never said that "We have seen Kṛṣṇa." This is called bhajana by separation, vipralambha-sevā.
So if we become mad after Kṛṣṇa, that is perfection, not that "We have seen Kṛṣṇa." We may see, but so far the Gosvāmīs are concerned, they are simply seeking. Ghoṣantāv iti sarvato vraja-pure khedair mahā-vihvalau. Vihvalau means mad—"Where is Kṛṣṇa? Where is Kṛṣṇa? Where is Kṛṣṇa? Where is Kṛṣṇa?" That is self-realization.
Thank you very much. Chant Hare Kṛṣṇa.