"You know how you have those times where you'll totally fall off track with your eating and exercise, and it just spirals down, getting worse and worse? One day off the wagon turns into a week, which turns into a month, and before you know it, your jeans no longer fit. It's a cycle many of us know all too well, especially me. But the good news, which I started to realize as I changed my life for the better, is that momentum works just as easily the other way. Once you get going, it starts to feel like rolling downhill."