I can relate to your problem to some degree, but my problem is getting past the first day. I have started and stopped within those first 24 hours more times than I can count. It's extremely frustrating. I'm just now completing my first day of this fast. I feel very accomplished already.
I'm taking it one day at a time, but still looking forward to my next goal. Mostly I'm focusing on today though. I plan to occupy myself by creating a healthy menu. I bought some good cook books and will be spending a lot of time pouring over them. I read or listen to the Holy Bible for encouragement. This time I'm going to watch less tv. I feel like tv sabotages my efforts. There are constantly commercials about junk food with people who are skinny. It sends the ideal and not the reality message to my brain. I hope this helps to some degree. Take care!