Whenever my clients ask me this question, I always give the same response.
Only you can really tell if you're an alcoholic or not, and deep down we usually already know. Hence why we ask the question.
However, if you are either hurting yourself or somebody else as a result of your drinking than you most likely have a serious problem with alcohol.
And by hurt someone else, I mean driving drunk, missing out on precious memories with your children, not being present with your wife, wasting money that could be put to better use like a college fund for your kids, etc, etc,