From Advice 
Rabbi Nachman: ADVICE (LIKUTEY ETZOT) by Rabbi Nathan of Breslov

Eating #4 and #5

4) Whenever you feel a sudden strong impulse to eat it is a sign that there are forces which hate you. This sudden appetite for food is caused by the animal part of your nature. You must break the animal impulse. Then you will be free from the clutches of those who hate you (39). 

5) Gluttony leads to divisiveness and strife. The glutton is an object of contempt. Other people look down upon him: they have no wish, to help him, on the contrary they put all kinds of opposition in his way. But a person who succeeds in breaking his greedy impulses will find peace. And peace will also reign in the realms above. A profound and wonderful contentment will reveal itself in the world (Ibid.).