There's about 650 calories in a bottle of wine, OP. Aside from anything else, you're setting yourself up for massive weight gain over the long (and possibly even short!) term.
What you're doing is called "self-medicating", and it's incredibly common - it's why people abuse drugs, over-eat, and even get addicted to sex. At the root of it are underlying causes such as a difficult childhood, past trauma, undiagnosed learning disabilities, low self-esteem etc.
You need to get to the bottom of exactly why you're so stressed and anxious. I'd go to your GP and ask them to refer you for counselling, and go from there.
But no, a bottle a night is in no way normal at all. I have a colleague who does this and it is slowly killing her: she will be lucky to keep her job much longer to be honest, and everyone - including her - knows it.
And at 52,and in terrible health, she's not likely to find another job, full stop. It's really awful to watch. :(