"When I began to think about the work you commanded I guarded my spirit, did not expend it On trifles, that were not to the point. I fasted in order to set My heart at rest. After three days fasting, I had forgotten gain and success. After five days I had forgotten praise or criticism. After seven days I had forgotten my body With all its limbs."
January 1, 1970
https://en.wikiquote.org/wiki/Fasting