One who is not satisfied with the mind must fall to degradation. One must conquer lusty desires, anger, greed, fear, lamentation, illusion, fright, unnecessary talks on material subjects, violence, the four miseries of material existence, and the three material qualities. That is the objective of human life. One who has no faith in the spiritual master, who is identical with Śrī Kṛṣṇa, cannot get any benefit from reading śāstra. One should never consider the spiritual master an ordinary human being, even though the members of the spiritual master's family may think of him as such. Meditation and other processes of austerity are useful only if they help in advancement toward Kṛṣṇa consciousness; otherwise, they are simply a waste of time and labor. For those who are not devotees, such meditation and austerity cause falldown.
Every householder should be very careful because even though a householder may try to conquer the senses, he becomes a victim to the association of relatives and falls down. Thus a gṛhastha must become a vānaprastha or sannyāsī, live in a secluded place, and be satisfied with food gotten by begging from door to door. He must chant the oṁkāra mantra or Hare Kṛṣṇa mantra, and in this way he will perceive transcendental bliss within himself. After taking sannyāsa, however, if one returns to gṛhastha life, he is called a vāntāśī, which means "one who eats his own vomit." Such a person is shameless. A householder should not give up the ritualistic ceremonies, and a sannyāsī should not live in society. If a sannyāsī is agitated by the senses, he is a cheater influenced by the modes of passion and ignorance. When one assumes a role in goodness by starting philanthropic and altruistic activities, such activities become impediments on the path of devotional service.