For advancement of material knowledge there is a need for personal ability and researching aptitude, but in the case of spiritual knowledge, all progress depends more or less on the mercy of the spiritual master. The spiritual master must be satisfied with the disciple. Only then is knowledge automatically manifest before the student of spiritual science.
The Sankirtana movement we have started offers the best process for becoming purified of all sinful reactions and coming immediately to the platform of spiritual life.
Srimad Bhagavatam 6.2.11
Just as those who are greedy see everything as a source of money-making and those who are lusty see everything as conducive to sex, the most perfect devotee sees Narayana [Krishna] everywhere.
Lord Chaitanya has given special stress to chanting of these holy names of the Lord as the basic principle of spiritual advancement.
Purport on Srimad Bhagavatam 3.29.18