In the material world, the consciousness is for sense gratification. I want to possess these things, because I want to satisfy my senses. This is the impetus, economic impetus. Otherwise nobody would work hard. He wants to satisfy his senses or expanded senses. His senses or family senses or nation's senses, community senses—the purpose is sense gratification; it may be centralized or expanded. This is the world going on. This is another . . . one consciousness. The other consciousness,not other—the consciousness is there, either this way or that way—if it is changed into Kṛṣṇa's satisfaction, as our consciousness is now for my sense gratification, my society's sense gratification, my nation's sense gratification, similarly, if we change it to Kṛṣṇa's sense gratification, then we become perfect. This is Kṛṣṇa consciousness movement.
We have nothing to learn; it is already there. The kāma, the lust, is there. Krodha is there, lobha is there, greediness is there. Everything should be changed for Kṛṣṇa's satisfaction. So you cannot manufacture, that "I am doing this for Kṛṣṇa's satisfaction." It must be confirmed by Kṛṣṇa or Kṛṣṇa's representative. Then such kind of activities will lead you to the highest perfection of life. That is stated in the Bhagavad-gītā.
What is that highest perfection of life? The highest perfection of life is tyaktvā dehaṁ punar janma naiti (BG 4.9): after giving up . . . we have to give up this body; this is as sure as anything. So the problem is, after giving up this body, what sort of body I am going to accept? That is assured in the Bhagavad-gītā, that tyaktvā dehaṁ: after giving up this body, punar janma naiti.