All this is true, and I would add that even if you're being paid well, once things get bad enough to affect your health, you should consider change. There are

All this is true, and I would add that even if you're being paid well, once things get bad enough to affect your health, you should consider change. There are more cases of "should've left earlier" than "should've stayed longer"; usually the reward for staying, if any, is not worth the damage done.