Just by scanning a few of your previous posts, I got the idea that maybe you're going too fast. People don't realize that food can be addictive just like
drugs. Actually, people who are addicted to food release the same hormones and stuff as junkies who just got a hit. It's some serious stuff. With that in mind, if going cold turkey is too harsh, then maybe try a different approach. It looks like you are trying to completely switch immediately then you slowly slip back to your old ways. Well, lots of people have trouble with this in every aspect of life... druggies trying to come clean, smokers trying to give up cigs, alcoholics trying to stop drinking, heroin addicts, over-the-top sinners who suddenly get hardcore into religion, and yes, food addicts trying to change their
diet. It's the same thing.
With that being said, I think you need to change small things, one at a time. This all-or-nothing mess will fail. It's already failed. Start off with something like your breakfast. For example, I noticed on one post where you were tracking your supposedly healthy new choices, you said you ate "an Orange, a Banana, Kix cereal, Skim Milk and decaf coffee". Is it really a big surprise that this doesn't sustain you? Kix? Get rid of it for sure. Where's the protein? Try eating eggs cooked in olive oil, without cheese, and I mean cooked naturally at home, not getting a sandwich from the 7-11. This will give you protein and different fats, which will make you feel satisfied. If you want cereal, trade out the Kix for Kashi.
Baby steps, that's where it's at. Make this one change and get used to it, then change something else. Next change maybe try to eat that fruit as a mid-morning snack instead of all at once for your breakfast. Just keep plugging away at it. Changing a whole plethora of things all at once will only make you relapse, make you confused, and feeling strange, as you've already figured out the hard way.