I don't know of anyone who has reasoned their way out of an alcohol problem. It's not like you're going to have an insight in therapy one day and then never want to drink again. Despite how much you do (or don't) understand about what leads you to drink, the urge to drink will still be there to take you down.

I think addressing the drinking problem head on with a program or a therapist specifically trained in addictions is more likely to lead to success. Not to say therapy is useless, it can help as an add on, but primary addiction treatment is what leads to success with stopping/reducing drinking.