I have to agree with others who implied that while you may not have an addiction now, it is certainly a behavior to keep an eye on. I can't tell you how many times I examined my drinking habits, or even took breaks, just to see if I could stop. And when I proved to myself that I could, I wrote off the problem as a moment of paranoia and went back to (what started out as) social/recreational drinking (in excess). That cycle continued until I lost the capacity to question the behavior at all and by the time I tried to quit again, I was too far out of control to get a handle on it. So really, it's up to you to determine whether or not you have an addiction, but it is always worth examining not only where you are, but also where you are headed.

I leave you with this: My biggest regret is that I didn't change something when I first had the sense to ask myself this question.