I know that feeling, I get them when I'm doing really well then I have a bad day. It's like a comfort thing to curl up on the couch and eat junk. I love my junk food, so this has been a real challenge for me, especially when I'm bored. I find walking with a friend and gossiping helps, takes my mind of the boredom. The other thing I find really helps is eating fruits and vegetables, especially pineapple if you have it.
And I agree with everyone..... YOU CAN DO IT!