Doing the wrong thing.
It’s ok to make mistake. Hell, I pride myself on it. Most important is apparently learning from them. But sometime the most important thing is just to make it quickly and get it over and done with.
The painful reality of doing things for other people is that sometimes they’ll insist on something that you know isn’t right. The worst thing about this isn’t that they are paying so have litterally bought the right, its when I roll over without too much of a fight!
Deep breath; “Yes, I’ll delete that ‘book now’ link…”