Try concentrating on a ten day period.. then extend out from there. We are creatures of habit and we can change those habits. You're good for a few days then you fall back to old habit. Keep stretching that boundary and eventually you'll be "in" your new clean habit. I went off my plan for a week with a pulled back and went carb overload, I felt awful, bloated right up and when I went back on low carb, I felt so much better and just swung back into the habit. It surprised me because I really don't like low carb
but I do well on it so I need to stick with it. If you can make it a habit you can stick with it.