"I am very pleased that you are doing nicely, but don't be proud. Always remain humble, meek, that 'I am nothing. I cannot...' That will be nice. And if you think, 'Now I have become liberated. I can chant and dance,' no, don't think like that. Just like even Caitanya-caritamrta author, he says, purisera kita haite muni se laghistha: [Cc. Adi 5.205] "I am lower than the worm in the stool." Jagai madhai haite muni se papistha: 'I am more sinner than Jagai-Madhai.' In this way... That is not artificial. A Vaisnava must think like that, that 'I am rotten. I have no value.' Don't be proud. Then the things will go on nicely. And as soon as you become proud, then maya -- 'Yes, you are God. Come on. I will kick you on your face. Come on.' These rascals becomes God, and the maya kicks on the face, and they think that they have become God. Don't become like that. Always remain humble servant and you will be happy."
(Srila Prabhupada lecture, Detroit, August 3, 1975)