1. Perfection by varnasrama

    If one’s position is ascertained by a bona fide spiritual master and one is properly trained to engage in the service of Lord Visnu according to the four social divisions [brahmana, ksatriya, vaisya and sudra] and the four spiritual divisions [brahmacari, grhastha, vanaprastha and sannyasa], one’s life becomes perfect.

    From Srila Prabhupada’s translation of SB 5.19.19