I feel your pain. I'm a teacher - just coming off two weeks vacation. We were back to it YESTERDAY - with the kids. Don't believe I've missed seeing the Rose Parade before. Today is a bit easier than yesterday so hang in there.
I keep forgetting that I need to stand on my feet at least 6 hours a day during vacation times so it won't be as difficult to come back. And .. I know, I know ... my kids do have "real jobs" that don't have the down time I do so I understand how wonderful it is. (I've been teaching 34 years and my 29 year old daughter makes more than I do. Those down times come with a price.)