Quote form Stoicism by John Sellars
"We have built up a large number of bad habits that we must overcome if we are to make genuine philosophical progress. That is why we can acknowledge one course of action to be the best, and yet follow another. The task for this second stage, then, is to habituate the soul so that one's consciously chosen philosophical beliefs can shape one's unconscious habits, and so determine one's everyday behavior. This process is often presented in terms of habituation and digestion."
This is the process of dyeing the soul a new color. We must come to desire what is correct. I must come to desire to not eat beyond plan.