Interesting article. I didn't have to read it to know the answer as I did the most arguing I have ever done in my life when I was drinking. There is a page "Understand Your Drinking with a couple of "tests" and one is a drinking assessment test. Other articles on this site are:
What are your excuses for drinking too much?
Your alcohol risk level
Binge Drinking
Could Christmas Party Drinking get you fired? (a little late, but good anyway...)