For me breaking the habit was the hardest part. The first night will be the hardest. You have to just tell yourself that you are really and truly NOT hungry - and do not go near the kitchen! Myt houghts when I tried this:

Will it kill or harm you NOT to have it? Nope
Will life as you know it cease to exist? Nope
Will I feel horrible if I give in? Yep
Will I feel wonderfully proud of myself tomorrow if I don't give in? Yep!