If you crave something sweet after a meal and are trying to break the habit, do this: after you finish eating, set a timer for 20 minutes and immediately engage in a (planned in advance) distracting activity. Tell yourself that you’re not allowed to consider eating something sweet until the timer goes off. By the time it does, it’s very likely that the craving will have passed completely because cravings don’t last forever, and they go away much more quickly the moment we get really distracted.