As a single glass helps my mood swings immensely, I've been concerned about developing a dependency. Like you, I closely watch my intake though.
I'm intrigued that it's causing you anxiety. Alcohol is a supposed to be a depressant.
The best thing to do, if you're concerned about alcohol and your health, it to consult a doctor. People on this forum are pretty knowledgeable about whisky, but probably less so about health matters.