Sugar is a really hard one. I mean, it's the bestest food ever, instant energy, AND it hits those dopamine receptors hard.
Keep working at it. I found that having various types of fresh fruit around at all times was a really big help. It's harder to binge on fruit...and it does quiet the cravings. Just be kind to you. It's harder than alcohol in my opinion because the negative side effects are less damaging and less obvious.
Make sure you're getting enough protein and fiber, that helps.