Self-realization means knowing yourself as spirit soul, not body; engage senses in Krishna's service.Listen — Srila Prabhupada Uvaca
Bhagavad-gītā 5.26–29 — February 12, 1969, Los Angeles 690212BG-LOS ANGELES [29:48] Bg-05.26–29_690212BG-LOS ANGELES Prabhupāda: [reading Bg. 5.26] "Those who are free from anger and all material desires, who are self-realized, self-disciplined and constantly endeavoring for perfection, are assured of liberation in the Supreme in the very near future." So first thing is that suppose somebody speaks of me very harshly. Naturally we become angry. Just like somebody calls me, "You are dog," or "You are hog." But if I am self-realized, if I know perfectly well that I am not this body, so you call me hog, dog or king, emperor, majesty, what is that? I am not this body.
So either you call me "Your Majesty" or you call me a dog or a pig, what I have got to do? I am neither His Majesty nor a dog nor a cat—nothing of the sort. I am servant of Kṛṣṇa. So this requires little training. Actually this is the fact.
Suppose I have got some dress, black dress. Somebody calls, "You black dress." Is that cause of anger? Somebody calls you black dress. So this is simply my false identification with the dress that I become angry.
Actually if I am self-realized, self-disciplined... Self-discipline means not to identify with this body. That is self-discipline. It requires training, of course.
Caitanya Mahāprabhu teaches therefore, tṛṇād api sunīcena [Cc. Ādi 17.31], that a smaller than the smallest grass. [“One who thinks himself lower than the grass, who is more tolerant than a tree, and who does not expect personal honor yet is always prepared to give all respect to others can very easily always chant the holy name of the Lord.”] Actually if I realized what is the spiritual dimension, actually my dimension, length and breadth, you cannot measure, because I am actually a very small spiritual particle. You cannot measure one ten-thousandth part of the tip of your hair. That is my measurement. So if I am smaller than the grass, that's a fact.
I am still smaller, smaller. I do not know how smaller, but I am thinking of this body. An elephant is thinking that "I am so big," or a man is thinking, "I am so big," ant is thinking, "I am so small." This smallness, bigness is due to this body. Therefore in Bhagavad-gītā you will find, paṇḍitāḥ sama-darśinaḥ [Bg. 5.18]. [The humble sage, by virtue of true knowledge, sees with equal vision a learned and gentle brāhmaṇa, a cow, an elephant, a dog and a dog-eater [outcaste].] One who is learned, he does not see the small body or big body. He sees the particle of soul, spirit soul; therefore sama-darśinaḥ.
He knows that the small particle of spirit is there in the ant and in the elephant. Therefore he sees the elephant and the ant on the same level, on spiritual vision, not on this external vision. This is called self-realization. "Self-realization" you have heard so many times. What is that self-realization?