Glad you are here and sharing - and what dee said is the simplest and direct start....glad you reached out to your dr & I know how terrifying it is to be honest (for real honest!) about my abuse.
I take Ativan (also a benzo) as supervised by my doc and at my visit last wk discussed how I'd been wanting to - and actually doing, sometimes- take more than the as needed 1-3 a day. I've been sober since 2/21/16 so it's certainly not something we'd be using for my anxiety if I continued to drink. I'm still taking it but have changed the process by which I judge "as needed" because this could be a very dangerous thing. I don't like the grey area I've been in.
The later we wait to quit, the worse damage we've done - 67 sounds like a perfect age for you to quit since that's where you are today.