Hey,
I've been there too. Drinking became so much a part of my evening that I literally had no idea what to do without it. I knew life could be better without it because I felt really terrible all the time. The only time I didn't have a serious headache was in the evening with my first drink of many.
It was no way to live.
My advice is to take it one day at a time. It can be hard to think about never drinking again that once you start to get used to life getting better and better without alcohol then you stop missing it as much.