Do not accept anything, do not allow the tongue to touch anything which is not offered to Kṛṣṇa. This is one item. And another item—engage the tongue, always chanting Hare Kṛṣṇa. You become perfect. Is it very difficult task? Anyone can do. Hare Kṛṣṇa mahā-mantra, anyone can chant. And nice prasādam, anyone can take. And actually, it is happening so. How these European, American boys and girls, they are advancing, they are realizing? Simply by that process, tongue: chant Hare Kṛṣṇa, take prasādam.