I am a PhD student. But I used to work as a roofer. My boss liked the expression "piss blood" and it is hard to forget it. I feel what I am working on is always making me do that. But it isn't quite on fire.
Sesame Street Goes to Graduate School has decreed the word of the day to be "atrophy", brought to you by the number B*exp(i(kr - wt))
My Dad said that about 95% of his grad students wanted to quit and the urge got stronger the closer they got to the end. I never understood that until I did my LL.M. thesis and about 50 pages in I realized that my assumed end point was completely not not going to work so I had to start all over again. ugh Roofing is a hell of a job. You only have narrow windows in spring and fall where the weather cooperates to not make your life miserable.