The 90-10 rule. Do what you should do 90 percent of the time (like eat right and exercise), and then the rest of the time, cut yourself some slack. You'll need that 10 percent "fudge factor" for that occasional special dessert or that every-once-in-a-while lazy Sunday in bed.

Fat is not a feeling. If you "feel fat" one day, realize that all that fat is in your head. Your body doesn't change nearly as much as you think on a daily basis and you shouldn't let yourself feel down because you had a piece of birthday cake yesterday. Keep your eye on the big picture.

A little positivity goes a long way. Find out just how powerful it can be. Post little motivational notes everywhere -- on your desk, the mirror, the fridge. They'll give you mini-boosts all day long.

You have thousands of cheerleaders. We're all here for each other so take advantage of our Walk It Off community. Any time you visit, chances are someone on the message board will say exactly the right thing to get you back on track.

Don't get overwhelmed. Sometimes the act of getting in shape and losing weight can feel like an insurmountable challenge with no end in sight. While it's important to keep the big picture in mind, it's also helpful to take this Challenge one day at a time.