Acyutānanda: When you said that everyone is destined to a particular goal, then where is the question of preaching Kṛṣṇa consciousness?
Prabhupāda: Therefore I said tasyaiva hetoḥ prayateta ko... You should try only for Kṛṣṇa consciousness, other things are destined. That is my, you did not hear properly, that you should not try for anything else, because that is already destined. If you want success, then simply try for Kṛṣṇa consciousness. That is wanted. Tasyaiva hetoḥ prayateta kovido na labhyate yad bhramatām upary adhaḥ (SB 1.5.18). We did not try in our other life. Other than human life, we did not try it. We simply tried for eating, sleeping, mating, and defending. Animal life. If you do the same thing again, and do not take to Kṛṣṇa consciousness, then you are losing your time. Therefore it is advised, you should try only for Kṛṣṇa consciousness, not for other things. They are already destined. This is the instruction.