Our reality and our fantasies are so different. In the thoughts, the old is real; the fantasies are real in the thoughts. The present experience is not the same as the fantasies.
The mind has so many fantasies and beliefs, and the reality is sometimes so far away from that.
So if you eat without mindfulness, then you’ll eat it with your idea of what it is like. That is why when you’re really mindful, the mind cannot indulge so much in its fantasies; and when it does indulge, it can’t really be mindful.