It's ok, Sweet Muffin. That's the biggest thing to understand. I absolutely love love love food. And I used to obsess over the 'bad' stuff alot. It's not fun. The happy news is that regardless of your eating plan (low fat, low carb, low cal, whatever) there's generally a work-around so you can have what you're wanting or something similar and not feel horrible about it. That's item #1.
#2 - Try new things that are on plan for you. Becoming an adventurous cook and eater has been one of the best things for me. I now know that there are tons of things I love more than pizza and McD's.
#3 - At some point, you have to decide who's in charge of your life. You or your body. When you decide to take charge, there's nothing like it. When I'm wanting something so bad that I want to cry, I go lift weights or go for an extra-hard bike ride. It's almost like punishing my body for being so ridiculous as to suggest that I eat something like that. Silly, but it works.
Hope that helps
