Prabhupada Letters :: 1970.

"In rendering service to Lord Krishna and His representative the Spiritual Master, we should always maintain this fearful attitude which means careful attention. This attitude will advance you progressively in Krishna Consciousness."

Prabhupada Letters :: 1972.

"So you should always feel yourself very much blessed by Krishna that you have come to this point after so much long struggling, so if there is from time to time little discomfort, do not pay it any attention."