Hi Charlotte,
It looks like you may be trying to tackle all of your bad habits at once - that is really, really tough. Since this is a pathway to lifelong good habits, try eliminating 1 thing at a time, or working on 1 problem area at a time. Often portion control is a biggy. So maybe rather than denying yourself a food that isn't quite as healthy, try just cutting back on the amount.
Or, for example, sugary soda is a big problem for lots of us. Start with cutting back and then eliminating soda. Replace it with water, calorie-free flavored water, or other low calorie beverage.
We all have a tendency to revolt against huge changes in our lives
