I find that sometimes when people try to get over one addiction, they become addicted to something else to help get rid of their previous addiction if that makes sense. Especially with former smokers, they almost always turn to food to help them resist urges.

Food is difficult because we actually need it to survive but it's hard when the one thing you are trying to avoid, is the one thing you need to survive (granted it's more in the type of food you are supposed to be avoiding and not food altogether). Have you tried keeping a food journal? You don't have to be so specific with calorie counting. Just note what you ate, when you ate it, and your mood/what prompted you to eat it and you can start to see some patterns. For example, I notice that drinking something sweet triggers my appetite something fierce. Also note the difference between your appetite kicking up and real hunger.