I don't actually see anything wrong with wanting a drink to help you relax. Life is stressful; alcohol is one way of dealing with it.
As to how much, ah, that's a different matter. For me one to two glasses of wine with dinner is normal; so's a nice cold G&T or two on a summer's day, or a Bailey's nightcap on a winter one.
The real question, I think, is whether you can go without if you want. I can, so I've got no worries about it. If you can, you're not a wino and you're not out of control.