The scheduled closing of my first house was the same day and time as my final exam in Discrete math. The prof wouldn't allow me to reschedule with one of his other classes. Somehow the exam was a breeze. I think the worry I had about my future wife being alone at the closing put me in some kind of mental overdrive. I came in 5 minutes late (overslept) and left 30 minutes early and aced it, as I found out later.
Once I got to the closing (still going 3 hours later due to seller silliness) all my self confidence and mental acuteness dribbled away. Gawd, my ex was stupendous. Never lost her composure, always polite, and as relentless as a landslide. In the dictionary under "tenacious", they have replaced the picture of a bulldog with hers. Because of the seller's silliness and her composure, we got about $2,500 in repairs/cleaning done on the seller's tab along with our original deal.
I miss her.