I'm addicted, too. I find that the more faithfully I stick to low carb, the less I seem to crave carbs! Once I go off my plan, it's really hard for me to get back. That's the stage I'm going through right now - trying to get firmly back on plan. I haven't been that bad, but it doesn't take much of a cheat for the addiction to kick back in.
I think the best motivator for me is the weight I am able to lose when I stay on low carbs. It seems like it's the only thing that works for me. I also find I feel better and have more energy when I stick to low carb, so I just keep reminding myself of that. I started off doing strictly Atkins, but over time I have leaned a bit more towards South Beach because of the focus on good carbs that seems to work for me.
Mark a commitment and give it a try for at least a couple of weeks. You should start seeing a real difference!