It is not very difficult. Just like in this Bhagavad-gītā the Supreme Personality of Godhead says that He is the Supreme, and He is advising, man-manā bhava mad-bhaktaḥ: "Just try to think of Me only, always." Man-manā bhava mad-bhaktaḥ: "And become My devotee."
Mad-yājī: "Just worship Me." Māṁ namaskuru: "Just bow down unto Me." So simply these four processes if one can do, He says, mām evaiṣyasi asaṁśayaḥ (BG 18.68):
"Surely, without any doubt, you shall come to Me."
So is there any difficulty? These boys, these girls, what they are doing? Man-manā bhava. They are chanting "Kṛṣṇa." That means thinking of Kṛṣṇa. They are devotees of Kṛṣṇa. They are bowing down before the Deity of Kṛṣṇa. They are eating Kṛṣṇa prasādam.
So the process is very easy, but we do not want to follow the instruction of Bhagavad-gītā, but simply falsely I am proud that, "I am reading Bhagavad-gītā." There are so many Bhagavad-gītā readers even in your country. So many. I know. But the real instruction they will not follow. They will interpret in some way, this way, that way. Or some rascal, I mean, commentator will also induce the reader, "Oh, here Kṛṣṇa says that you become devotee of Kṛṣṇa—it is not up to this Kṛṣṇa; there is another Kṛṣṇa." Just see.
You see? Kṛṣṇa directly says that man-manā bhava mad-bhaktaḥ (BG 9.34), and the commentator says: "Not to Kṛṣṇa."
So how people can understand, you see, a misleading misinterpretation? Otherwise, if you simply study Bhagavad-gītā, you understand these five principles—what is God, what I am, what is material nature and what is time and what is work. Then you are in full knowledge. These five things are very nicely explained in the Bhagavad-gītā. Try to understand.