Dharma is given by the Supreme Personality of Godhead, just as the law is given by the state government. Man-made dharma has no meaning. Śrīmad-Bhāgavatam refers to man-made dharma as kaitava-dharma, cheating religion. The Supreme Lord sends an avatāra (incarnation) to teach human society the proper way to execute religious principles. Such religious principles are bhakti-mārga. As the Supreme Lord Himself says in Bhagavad-gītā: sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (B.G. 18:66).
(Srimad Bhagavatam--5:3:20--purport).

In the bhakti-mārga, the path of devotional service, one must strictly follow the regulative principles by first controlling the tongue (sevonmukhe hi jihvādau svayam eva sphuraty adaḥ (Brs. 1.2.234)). The tongue (jihvā) can be controlled if one chants the Hare Kṛṣṇa mahā-mantra, does not speak of any subjects other than those concerning Kṛṣṇa and does not taste anything not offered to Kṛṣṇa. If one can control the tongue in this way, brahmacarya and other purifying processes will automatically follow. It will be explained in the next verse that the path of devotional service is completely perfect and is therefore superior to the path of fruitive activities and the path of knowledge.
(Srimad Bhavavatam-6:1:13/14--purport).

Unless one performs activities with reference to Kṛṣṇa consciousness, cessation of material activities will not be helpful. In hopes of achieving naiṣkarmya, freedom from material action, many highly elevated sannyāsīs stopped their activities, yet they failed and returned to the material platform to act as materialistic persons. But once one is engaged in the spiritual activities of bhakti-yoga, one does not fall down. Our Kṛṣṇa consciousness movement is therefore an attempt to engage everyone always in spiritual activity, by which one becomes transcendental to material actions. The spiritual activities of bhakti-mārga-śravaṇaṁ kīrtanaṁ viṣṇoḥ smaraṇaṁ pāda-sevanam (S.B.7:5:23)—lead one to understand the Supreme Personality of Godhead. Therefore, as stated here, sattvena pratilabhyāya naiṣkarmyeṇa vipaścitā: "The Supreme Personality of Godhead is realized by pure devotees who act in the transcendental existence of bhakti-yoga."
(Srimad Bhagavatam--8:3:11--purport).