Try not to eat past a certain hour (8pm) unless you're really starving.
Realize that if you stop eating certain foods (like sugar, if you can call it a food) you do stop craving them as much.
Don't beat yourself up if you make a mistake. We all do. Just move on. The biggest diet saboteur is thinking, "I blew it already I might as well go whole hog." Go half hog. You pigged out on cookies? OK treat the next meal or snack like a whole new start not a continuation of a bad trend.
And yeah sparkling water rocks.