Don't eat or drink anything handed to you through a window
Yes, even coffee. Get up and go inside to get your coffee if you want it that bad, Marie suggests. Better yet, go someplace where you can control how much sugar and cream goes into it.
Step outside your comfort zone
Embrace uncertainty, especially if you consider yourself a perfectionist. "Things will not always go your way, no matter how prepared you think you are," Teeter says. "Many folks throw in the towel after just one setback. But if you condition yourself to expect and embrace [setbacks], you'll be far happier with yourself and the progress you're making -- even during the difficult times."
Eat a lean protein and complex carb during each meal
For Byers, that meant lots of grilled chicken with sweet potatoes, grilled zucchini with asparagus, and meal-replacement shakes. "One of my favorite meals is scrambled egg whites with hash browns and green salsa mixed together," she says. "Another favorite is extra-lean turkey tacos on corn tortillas and avocado slices, plus salsa."