JessP,
Bargoo's post describes how many members have finally managed to succeed--namely, finding out what works for you. That means experimenting, and also discarding what doesn't work.
Compared to many people, you don't have that much to lose. Still, now is the time to stop gaining! Otherwise, you could find yourself in a worse position later on, with even more to lose. So, you've made a start--and you can make it work.
It sounds to me like you are in a classic dilemma. The part of you that is reading the books and ordering the exercise videos isn't the part who is in charge when you feel like eating something. Therefore, no matter how much you learn about healthy eating, you end up not following through.
It might help for you to take things slowly. This is just a suggestion, as is anything you read here. Pick out one thing you can change right now. It may be--drinking one less soda, or only drinking diet soda. Or, only eating vegetable snacks after dinner in the evening--if that seems too hard, only eating one serving of light popcorn in the evening--instead of grazing on whatever is at hand. Or, you might choose to eat a healthy breakfast each day. The point is, choose ONE thing to change, and then do only that. Do it for a week or more.
Then, choose something else. Maybe it will be--take a short walk every day, or every other day. Or, get rid of the corn chips or ice cream, if those are 'trigger' foods for you. Just another one thing. Add that to the first thing.
This way, you only have to cope with one thing at a time, and you can allow everything else to just happen, without obsessing or getting down on yourself.
Worth a try?
Good luck!
Jay