I like my job. really. But! I do not like needing to revise a five-year-old chapter that suddenly has a hard deadline of the end of this week and discovering that (1) it sucks, largely because (2) I did all the analysis and draft-writing while recovering from a grade 2 concussion suffered at the outset of the Iraq war, which means (4) the artifact sampling is inexplicably fucked up and (5) the syntax is even more tortured than usual but (5) whatever, I don't remember doing a shred of any of it anyway.
It is amazingly difficult to plausibly explain prehistory when you, uh, don't have any data.
Professionalism: I haz it.