I had great experiences in the tech industry for over 25 years with very little overwork, great pay, and though I have some skills, really nothing special. My way to win was getting along in teams, and being vigilant on behalf of customers/company. I have a high school diploma. This was easy money for me.
Demanding is hauling 50lb concreate blocks or stocking store shelves all day, or something maybe less physically strenuous, but..distasteful, like working with sewage or garbage)