Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura Prabhupāda
Question: By what method should we rid ourselves of anarthas (tendencies that are obstacles to spiritual advancement)?
Answer: Without performing hari-bhajana, the living entity becomes a fruitive worker (karmī), an empiricist (jñānī) or one engaged in the pursuit of selfish interests (anyābhilāṣī). Therefore one must always call out to Bhagavān by chanting the mahā-mantra. One must chant a fixed number of Kṛṣṇa’s holy names, according to ones capacity, for it leads to deliverance from anarthas and sends inactiveness and lethargy far away. By engaging in chanting the holy names of Śrī Hari without offence, all varieties of perfection are achieved.
from Śrīla Prabhupādera Upadeśāmṛta