Please stay on the purity platform; chant 16 rounds daily and without fail, follow all the regulative principles, and read all our books and your life is sure to be successful. Unless one is sufficiently empowered, one cannot preach Krishna Consciousness. So the fact that you are preaching so nicely is proof that you are already benedicted by Krishna. So preach Krishna Consciousness and be happy.
Letter to Vaikunthanatha and Saradia, 4 April, 1971