HOW IS IT POSSIBLE?

     I see two ways to approach the spreading of sankirtana (glorification of the Name, Form, Pastimes,  etc. of the Lord.) One is a kind of mechanical matter of duty approach. That will only go so far and cannot be maintained for any length of time. Something like what is happening in the ISKCON movement at the present time. Because of a lack of ruci (taste) eventually it winds down and the devotees find other things to do, sell things, open restaurants, etc. 

     The other way which is really the only way.The sankirtana leaders need to be experiencing something unique, something extra ordinary and preach to the followers to enthuse them that they too can have that. In other words they must be empowered by the Lord in the mood of love of God in separation. Without such devotionally advanced devotees how is it possible to spread love of God? 

     And after all that is the sankirtana movement of Lord Chaitanya.