Basically everyone said it all.
Cut out the junk food, avoid fast food restaurants, and do little changes in your diet and lifestyle (water instead of soda type thing).
And it's a wonderful idea to keep a food diary. I've been doing it since the beginning of August and it has helped a lot - evaluating eating habits and noticing the bad food choices and counting calories (seeing how much I can eat and then burn off with cardio

).
Prevention.com has a lot of smoothie recipes as well as main dish stuff and snacks