You have seen this verse in the Nectar of Instruction. Utsāhā: enthusiasm. Dhairya means patience. Utsāhād dhairyāt niścayāt, means conviction. And tat-tat-karma-pravartanāt, and following the regulative principles. Sato vṛtteḥ, to become sincere and honest. And sādhu-saṅge, and in the association of devotees. Ṣaḍbhir bhaktir prasidhyati. The bhakti, Kṛṣṇa consciousness, will advance. These are the six principles we should always remember: enthusiasm, patience, conviction, following the regulative principles, becoming honest, and in the association of devotees.
So I am very glad to see that you are all very enthusiastic, and you follow the other principles. Then be sure that you are advancing in Kṛṣṇa consciousness. And that will save you from the dangerous civilization which do not understand the future of life. As the cats and dogs, they do not understand what is the future of life, similarly, if human beings, getting this opportunity of very intelligent, developed consciousness, if a human being does not understand what is the goal of life, what is the future of life, then he remains a cat and dog. Sa eva go-kharaḥ (SB 10.84.13).