Then I suggest you use that time to watch The Great Happiness Space, a documentary about male hosts in japan who are so suave they make $10K+ per night blue-balling women at their bar.
Spoiler: despite being as successful with the ladies as they are, and making as much money at it as they do, they're not all that happy.
After that, I suggest you swallow your overblown pride a little bit. Why is it so unforgivable for you to have a brain fart while calculating change at the cash register? That's a pretty ridiculous standard of perfection you expect out of yourself. You think Jesus Christ never had a booger? If you gave a friend this much shit for making a slipup that minor, you'd be the world's biggest asshole. Why do you deserve any less from yourself?
I guarantee you the checkout girl wasn't treating you weird for spacing on exact change, it was because you were being such a drama queen about that nickel.
