Spiced.. you need to let the "bad advice" roll off your shoulders. It's just a meaningless resentment. The nurse is not an expert on alcoholism. Also, she may have said that to lift your spirits (even though we all know that isn't good advice). Just assume she was trying to help you. Nothing anyone says or does can put you in the grave. Only YOU can do that. Blaming another person for your actions is what puts you in the grave.
I understand you're in a tough place right now, but you can get better. It takes action on your part but it is possible. I could care less about the difference between a "problem drinker" and a "chronic alcoholic". Those are just lables. The bottom line is YOU ARE ALIVE and can fight this. Go to a meeting, get a sponsor, and don't worry about what a nurse tells you. Just be happy she was there to help at a very tough point in your life.
Best of luck, hang in there, and let go of the bullshitt that's bringing you down!