It will all come out in the wash.

It's very hard to recover from an intense relationship but one does. Think of what you put into it of yourself though, now you have to get that back out so you can move on. Not easy.

Take today to see if you can figure out an interest outside your work, closer to home so you can work on balancing a little more? Go to a home improvement store or hobby shop or something and find a project. Go to a bookstore. Don't know what you do at work but perhaps there's some related piece you can spin off at home? Just start something unrelated to work and this girl, doesn't matter how much you don't particularly feel like doing it, just do it the same way you got into the job when it was new.