Welcome lalonder!
Admitting our problem and reaching out for help is really hard. We've all been there, though, so you're not alone.
It is starting to get scary to think about not drinking because it feels like if I don't I'll go insane since I'm already prone to anxiety.
I think most all of us had that fear and about a dozen others ("I'll never have fun again," "I won't be able to socialize," etc. etc.)
Ironically, alcohol creates a lot of anxiety and depression, not to mention the constant obsession. It takes a bit of time to get used to, but being sober is SO much better. Keep posting and reading!