I like the composition in this, and your use of negative space to the upper right. The cup appears to be in focus, but for some reason my eyes are drawn to the handle, which is a bit soft, and that makes it look like the whole cup seem out of focus.
Why do graveyard workers need coffee any more then dayshift people? Just teasing, I work the graveyard shift too! The photo is ok, with advance editing I would have cloned out that black spot on the handle.