First thing, that to deny the material existence that, "I am not this matter." So this is not ordinary thing that, "I am not matter." But Lord Caitanya says that this realization that, "I am not matter" will be very easily realized if you chant Hare Kṛṣṇa sincerely. He says that ceto-darpaṇa-mārjanam (CC Antya 20.12). If we chant Hare Kṛṣṇa, the immediate, first installment of profit will be the understanding that ceto-darpaṇa-mārjanam.
I am identifying myself as belonging to this material world. This is misunderstanding. Actually, I don't belong to this material world. The whole concept of my material life is based on this misunderstanding that, "I am matter. I am this body." So Lord Caitanya says that even if you do not follow the regulation of acquiring this knowledge, simply if you chant Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare / Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare, then your first installment of profit will be vanishing this misunderstanding that "I am this body."
Ceto-darpaṇa-mārjanam (CC Antya 20.12), clearing the dust of the mirror of the mind. Darpaṇa means mirror. Just like on the mirror if there is dust, you cannot see your face very nicely. If you wipe the mirror very nicely . . . so this Hare Kṛṣṇa chanting is the process of wiping out the dust accumulated on the mirror of my mind. Mind, cetaḥ. Cetaḥ is consciousness. Mind is not exactly cetaḥ—consciousness.
So our movement for Kṛṣṇa consciousness is a process of clearing the consciousness. Originally, we are all Kṛṣṇa conscious. Because in the Bhagavad-gītā we understand that we are part and parcel of Kṛṣṇa. Kṛṣṇa says in the Fifteenth Chapter, mamaivāṁśo jīva-bhūtaḥ jīva-loke sanātanaḥ (BG 15.7), "These jīvas, these living entities, they are My part and parcel." And sanātana, part . . . but they are not whole.
The Māyāvādī philosophers, they claim to be the whole. But Vaiṣṇava philosophy, we do not claim that we are the whole. The Māyāvādī philosophers, they claim that, "I am God." But we do not claim. We claim that we are part and parcel of God. As part and parcel of God, we have got the same quality. Just like minute particle of gold is also gold, but that part gold and the whole gold, they are never equal.