Dear Jeph,
If you need to take a day off every now and again, I will not personally hold it against you. Christ, I took Tuesday off from my job for no good reason and burned a "sick" day. I think you deserve a few mental health days here and again, so seriously, don't feel bad about it. I enjoyed the yelling bird comic and was pleasantly surprised when I saw the real comic, and then thought, "man, Jeph is a real slavedriver, meaning he drives himself."
So yeah, take it easy!!!!! I love the comic and have for 5 years now, wooooooo