I tried to re-negotiate a 4 day work week, but they weren't having it, so ended up walking. I know it is privileged to say, but sometimes no amount of money is worth giving up things that are important to you. For me, I was giving up my time and ignoring a project that I think is very important. When I came to my senses about how the money isn't worth giving that up, they had to yield, or I had to leave.