Material society, friendship and love are all different phases of lust. Home, country, family, society, wealth and all sorts of corollaries are all causes of bondage in the material world, where the threefold miseries of life are concomitant factors. By associating with pure devotees and by hearing them submissively, attachment for material enjoyment becomes slackened, and attraction for hearing about the transcendental activities of the Lord becomes prominent. Once they are, they will go on progressively without stoppage, like fire in gunpowder. It is said that Hari, the Personality of Godhead, is so transcendentally attractive that even those who are self-satisfied by self-realization and are factually liberated from all material bondage also become devotees of the Lord.
(Srimad Bhagavatam--1:10:11-12--purport).

When one engages in the spiritual activities of devotional service, naturally he does not get any opportunity to engage in sense gratificatory activities. Kṛṣṇa conscious activities are performed not blindly but with perfect understanding of knowledge and renunciation. This kind of yoga practice, in which the mind is always fixed upon the Supreme Personality of Godhead in devotion, results in liberation in this very life. The person who performs such acts gets in touch with the Supreme Personality of Godhead. Lord Caitanya, therefore, approved the process of hearing from realized devotees about the pastimes of the Lord. It does not matter to what category of this world the audience belongs. If one meekly and submissively hears about the activities of the Lord from a realized soul, he will be able to conquer the Supreme Personality of Godhead, who is unconquerable by any other process. Hearing or associating with devotees is the most important function for self-realization.
(Srimad Bhagavatam--3:25:27--purport).

The real mission of life for the conditioned soul is to reestablish the forgotten relationship with the Supreme Personality of Godhead and engage in devotional service so that he may revive Kṛṣṇa consciousness after giving up the body. One doesn't have to give up his occupation as a brāhmaṇa, kṣatriya, vaiśya, śūdra or whatever. In any position, while discharging his prescribed duty, one can develop Kṛṣṇa consciousness simply by associating with devotees who are representatives of Kṛṣṇa and who can teach this science.
(Srimad Bhagavatam---5:14:40--purport).

Śrīla Jīva Gosvāmī, in his thesis Bhakti-sandarbha (202), has stated that uncontaminated devotional service is the objective of pure Vaiṣṇavas and that one has to execute such service in the association of other devotees. By associating with devotees of Lord Kṛṣṇa, one develops a sense of Kṛṣṇa consciousness and thus becomes inclined toward the loving service of the Lord. This is the process of approaching the Supreme Lord by gradual appreciation in devotional service. If one desires unalloyed devotional service, one must associate with devotees of Śrī Kṛṣṇa, for by such association only can a conditioned soul achieve a taste for transcendental love and thus revive his eternal relationship with Godhead in a specific manifestation and in terms of the specific transcendental mellow (rasa) that one has eternally inherent in him.
(Sri Caitanya Caritamrta--1:1:35--purport).