True story: I was once working a job mopping floors on the night shift while putting myself through college. I hated my job so much I would be having a screaming fit on the way in to work... I thought I had the worst job in the world.
Then, one day, I was standing guard at the front gate of the air force base (while on my weekend duty with the reserves) and a guy came in to pick up the porta-potties after an event.
The truck smelled from a mile away. And I watched as he pull up to the porta potty, took out a vacuum hose, sucked out all the stuff inside, took a bucket and water and brush-cleaned the inside before loading it onto the truck to carry it away.
And I thought “THAT is the worst job in the world”. I was so polite to that poor guy, and it changed my outlook on my job and life in general.
Years ago I knew a guy who worked two jobs. One was a porta pottie cleaner. For his other job he was a short order cook. Mmmmm Mmmmmm