Fasting
Seen some posts recently regarding fasting as part of Carnivore. It's an age-old tradition, but I believe people turning onto historical diets like Carinvore may not understand how to properly fast from a historical perspective.
That is, fasting is historically always inclusive of simultaneous prayer. "Prayer and Fasting", go together. They are not intended to be separate exercises. So, whether you believe in prayer or not, I'd encourage you to follow the proven historical concept, and at least try both to achieve success, in diet and in life.