I work a full time job 9-5, and I really, really struggle to keep up with life, and get sufficient rest, and have interests and hobbies and do things I enjoy. Working full time constantly drains me to the point of burn out, unless I take the weekend (or a significant chunk of it) to recover, and then I have to sacrifice the parts of life I enjoy like travelling and having a social life. So basically I've gotta have a life and be permanently burnt out, or not have a life and get sufficient rest. I don't see a way I can sustainably work full time and have a life without making myself unwell, but I can't afford to work any less.