Is your job making you feel "sick"?

You do it well because you respect it, your boss and what it stands for. You carry on because it’s just how you make a living, you give of your best but somehow it has you feeling sick. Psychologically, physically, you come out a wreck! Do/did you ever feel like that? I know for most there isn’t much choice, you just go on doing what you can, but have you ever felt that way?