Well, urges to drink do come from forces beyond your control, which comes down ultimately to chemical production and distribution in the brain. That's why it's so hard to quit, once you're good and pickled - your brain has adapted itself to your continuous alcohol consumption as best it can, and when you stop you're left with a brain that has adapted to alcohol, but now without alcohol.
Enlightened decision making is fine when you can do that, but many people need a lot more than a book to make through the early days - hence the support plans, secular or otherwise, up to and including inpatient treatment.
Just sounding a bit judgemental there, no one has answers for anyone but him/herself.
