I think it helps to look into the reasons that you are eating, boredom, stress, etc... Eating mindfully, instead of mindlessly has really helped me. I realized that I wasn't really concious of the amount of food I was eating. I really thought that as long as I ate "healthy" food I was going to be fine. Unfortunately, I managed to put on 30+ lbs on my so-called healthy diet.
I totally agree with MommyNay, it's baby steps. Don't beat yourself up about the food choices you made. You can't change them and the negative inner voice will only make you feel like a failure. It's a journey. You can do it!