I have a certain fondness for 'screwing up' myself, so I'm sympathetic for you.
There's no value in overworking yourself. I mean, obviously there is
some, or you wouldn't do it, but long-term value is a different story. Does your boss want an employee who is mentally drained from the job, instead of one who can work cheerfully because one is healthy and balanced? Probably not. And if, for whatever reason, your boss does, then you can guess what the people on this forum will tell you to do.