I've been doing very well with the walking, and the Coke Zero. My eating habits still need some work, but I've cut out the snacks from the vending machine at least. Unfortunately, I'm not seeing much of an improvement in my weight, so I'm getting a little discouraged. Not that I'm going to quit, but it's a little sad that the scale won't even drop down one number. I'll just have to keep on keepin' on, I guess.. and hopefully things will change in time.