Trading Pride for Gluttony? No Thanks

I'm a little frustrated. I've been walking four times a week, martial arts four times a week, and trying to eat a better selection of food for a month now....And I'm stuck. This is where I quit and give into the food. This is where I resign myself to the weight. "It's not that bad being a little heavy. I'm not really that heavy anyway. Who wants to try to be so disciplined all the time, it's not good to be so strict and structured." While there is some truth to these comments, I cannot swallow them as easily as I could those chocolate chips that are calling to me from the fridge. They are excuses for me to give up and not press on towards my goal. I was listening to Mark Driscoll this morning, on the treadmill, and he spoke on the heart. Many times we try to change undesirable behavior with behavior modification, he called it. The problem with this approach, he observed, is that you don't ever really make the change that is necessary. You must examine the heart to get to the "heart of the matter" so to speak. So, as I chatted with my hubby after the walk I confessed...I don't want to lose weight! I have been at my near goal before, and I realize that all I did was trade gluttony for pride. Pride is my achilles heel of sins. I can fight gluttony better than I can fight pride. I would rather wrestle with food than myself. So what do I do? I've looked into my heart and I DO NOT LIKE what I have found there. Now what?