Jayapataka Swami: In the first and second canto of the Srimad Bhagavatam, Pariksit maharaj asks how to get rid of the dirty things in the mind. So this is an important aspect of devotional service. So we want to get rid of all the dirty thoughts from our mind, and naturally blissful thoughts will take precedence. So, practicing devotional service means cleaning the consciousness. Lord Caitanya in His Siksastakam, He also taught this. Ceto darpanamarjanam – just as a mirror covered by dust has to be wiped clean, in the same way our consciousness is cleaned by the chanting of the Hare Krsna maha mantra. So since there are many questions I answered this very short.