Is a bottle of wine a day and Xanax too much?

OK, I know that it sounds bad. A few years ago, if someone asked me if drinking a bottle of wine a day was bad for them I would delicately probe at possible addiction without completely offending them. But the weird thing is, I do just that. I work during the day and drink a bottle of wine to myself over a 5 hour period (about a gl or less and hour), take my prescribed Xanax 1mg, and feel relaxed and great. I am not inappropriate about it, am always alone watching TV and winding down for bedtime, and it doesn't effect my life in a negative way that I know of, but I am paying close attention to anything. I do have a stressful but awesome job as an RN, and am usually in charge of the entire unit. I'm engaged and have a one close friend and some good acquaintances, but to be honest I enjoy and savor my alone time more than anything else. All my lab work is normal. I feel more alert at work now that Ive been drinking this much and taking Xanax than before. Maybe because stress and exhaustion are so bad for your body and mind? So, is this an awful road I'm down, or have I actually found a happy medium between facing life on its own and indulging in vices? Trust me, I am very much aware that this sounds like a bad mixture of too much booze and a prescription benzo. Please no obvious "That is bad!!!" Just some real feedback for myself please. FYI I am 29 years old without children. Ive been working as an RN since I was 23, so I am not exactly a screw up. I guess what I am really asking is, is there anyone out there with a similar story??? Thank you so very much.