It's not an easy question to ask, or to answer.
"Do I have a drinking problem?"
Everyone has an opinion. Your mother thinks you drink too much. Your buddies think you don't drink enough. Some folks can drink every night until they black out, then make it to court in the morning, while others have a drink or two and have to call in sick the next morning. There are clinical criteria and there are informal self-evaluations.
So yeah, asking the question is hard, but answering it (honestly) is harder.