The level of simplicity being applied here suggests to me you've never been an alcoholic nor spent much time with alcoholics. This advice is at the same level of "just think positively" when addressing depression; it's almost laughably out of touch and unhelpful.
It's great that you find it easy to exhibit such control over your behaviors, but it's important to remember that the reason alcohol is the most widely abused drug in history is because to the vast, vast majority of people, an 'easy' internal examination isn't enough to permanently change one's behavior.