Actually, if one associates with a sādhu, with a pure devotee of Lord, then certainly it will be effective. Certainly. This Kṛṣṇa consciousness society is meant for giving opportunity to the people to make association with bhaktas. By association with bhakta, devotees, they'll become also bhakta. Saṅgāt sañjāyate kāmaḥ. If you associate with drunkards, then you gradually become a drunkard. But if you associate with devotees, gradually you become a devotee. This is natural sequence.
So ādau śraddhā tataḥ sādhu-saṅgo 'tha bhajana-kriyā tato 'nartha-nivṛttiḥ syāt (Cc. Madhya 23.14-15). Anartha, things which are not wanted. Artha means wanted, something wanted; anartha means this is not wanted. So we are habituated to so many things, bad habits. So anartha-nivṛttiḥ syāt. This is the result of bhajana-kriyā. Anartha. Anartha. Just like these things, as we prohibit—illicit sex, intoxication, meat-eating and gambling—these are anarthas. They are not required actually. But people are habituated to these things on account of bad association. So if you associate with a really sādhu, if you execute really devotional service, these anarthas will be vanquished. That is the symptom. No more illicit sex. No more intoxication. No more gambling. No more meat-eating, fish-eating, egg-eating. No. That is called anartha.
People are not dying for want, for want of cigarette smoking. But it is habit. You can give it up. You can give up so many things which is not required at all. So these unwanted things will be automatically vanquished. This is the result of bhajana-kriyā. Not that I am chanting one hand, Hare Kṛṣṇa, and in another hand, smoking. This is not anartha-nivṛtti. The... If actually you are chanting, there will be no more in the other hand, smoking biḍi or cigarette. This is called anartha-nivṛtti. Then after anartha-nivṛtti, then you become cleansed. Yeṣām anta-gataṁ pāpam. This is called the freedom stage from all sinful activities. Because unless you are free from all sinful activities, we cannot engage ourself in devotional service.