I think your Dr. is right to have you on a med that you take everyday to help keep the anxiety level low.
Ativan is for short term use, up to 4 months. If you feel like you need a benzodiazepine, I would strongly discuss the use of one of these meds knowing ahead of time they can be very useful. However you can become dependent on Ativan and the withdrawl needs to be very slow. No alcolhol should be used with any of this class drug.
Take care. I hope you feel better soon
Reference:7th Edition PDR Pocket Guide.