After the first few weeks, I didn't so much wonder if I'd get through the day -- I knew I could get through the day because I'd done it before.
But I spent a whole heck of a lot of time in my first couple of years thinking about not-drinking. Wondering why I drank, reliving the badness of when I drank, going over my drinking history, reminding myself not to drink.
It wasn't a good mental scene. It was its own little obsession revolving all around alcohol. I advise you to work daily on developing a more positive focus for your thoughts.