Grateful to friends who are there when you need them. Even for the psycho call in the wee hours of the morning, without even holding it against you...much.
ETA: Oh, and Advil. Lots and lots and lots of Advil.
And for the mean store manager not being there. He always greets you as if you've done something wrong. I think if I was an hour to work and started a bit early to help my coworkers out, he'd still question my being there as if I was deliberately out to cost him extra money. Or something like that.