Radhanath swami says : Chanting produces best results when we go deeper into chanting. Standing on the shores of the ocean one cant access the precious gems and jewels on the bed of the ocean; one will be tossed away by the waves. However if we go deeper into the ocean, we can access the pearls. Similarly by chanting superficially or occasionally, we cant avail the benefits; well be thrown away by the waves of material energy. We need to go deeper in our chanting to reap the fruits of chanting. What does it mean to go deeper?

http://krishnayoga.info/2011/10/radh...ernal-changes/