I recall when I was considering taking the giant leap from the J.O.B. I became keenly aware of the co-workers around me who were so miserable that it was affecting their health.
You know: The ones who have an excel spreadsheet that automatically calculates how many days are left before retirement. And believe me, some of them had a long way to go, even though they were looking a bit rough around the edges.
Not to be rude, but stress does take its toll.