A pure devotee always thinks himself as not-devotee.  That is a good attitude.  If one thinks he is big devotee that is not good, thinking that he is first degree.  We should not be puffed up, a devotee avoids it, remaining always in the second degree.  A dog is a faithful servant. To become lowest dog is to become on the highest platform of service.  Krsna has given everyone something extraordinary and to serve Krsna with one’s extraordinary talent means successful life.

Srila Prabhupada. Letter to Sukadeva, March 17, 1973