“So Lord Caitanya Mahāprabhu says, ceto-darpaṇa-mārjanam (CC Antya 20.12). This is Sanskrit word. It is meaning that ‘This chanting of Hare Kṛṣṇa mantra will cleanse your heart.’ Ceto-darpaṇa-mārjanam. So as soon as the heart is cleansed, then all our material problems are solved. Ceto-darpaṇa-mārjanaṁ bhava-mahā-dāvāgni-nirvāpaṇam. Bhava-mahā-dāvāgni, the Sanskrit word, means that 'This material world is just like a forest fire.’ So forest fire… I think all of you must have got some knowledge
formula (2)
“On numerous occasions Srila Prabhupada has gave the the formula for enthusiasm: to follow all the regulative principles strictly — to chant our minimum sixteen rounds, follow the four restrictive principles, and to engage in all of the prescribed activities. That is the way to become enthusiastic and to maintain one’s enthusiasm.”
The Formula for Enthusiasm (Right click to download)
Source: http://www.girirajswami.com/?p=15971