I hope your feeling better soon, I know how you feel, i have periods of my life where i don't know if i'll make it through and it's only my kids that do. hang in there.
And about your job, money isn't everything. I just left my husband who earn't a lot, we were quite well off, and now am a single mum on a pension, i have to watch the pennies all the time but i'm a hell of a lot happier. I depends on your financial comminments though i suppose.