Well if it makes you feel more normal, I can tell you that my first job out of college I also went to bed at night praying "God if this is going to be the rest of my life, please take me now; it's not worth it." And it was a very good job, but not for me at the time. I left that job after a year (so it wasn't the rest of my life), but on the other hand I'm also currently unemployed and living with my parents so no guarantees that my advice is a path to a life of independent adulthood here.
Some things to consider: You have been through huge crazy unpleasant transitions recently; that's a huge amount of stress. You probably don't have the energy to take on much of anything new right now and that's ok, just doing the routine well is towering success at this point. Also with all that stress, you'll do well to play to your natural preferences in a job as much as possible (eg: if you're introverted, try to find a job that doesn't involve interacting with people all day long).
Only other advice I'd have is that it is your life to spend or waste as you see fit. If you need to spend some time doing an unfulfilling or undemanding job while your brain tries to process and adjust to all the change, that's fine. Taking care of yourself and doing what is good for you is not a waste.
And the one piece of advice burned out me got that helped was to take a short time everyday (I was told like 5 minutes, but usually spent more) to ask God what he had to say to me and then journal my impressions. It was hard for me at the time because I felt like God was just going to have more things he wanted me to do and I was too tired to do any of them; but mostly I've found it to be a time when truth is reinforced and I'm called to trust that God is still good, still in control, and still has a plan (though I can't see it now) and my situation is not beyond his power to change and turn for my good (and feeling like I'm starting on my 5th career path in 12 years because none of the other ones worked out makes that challenging to believe sometimes). One other thing I did that seems to have helped in my situation is I wrote down all my expectations and disappointments (in God, myself, life overseas, ministry etc.) just to get it out and not keep rehashing it in my mind over and over and over.
And maybe that is the best advice I can give, is keep writing (here on CC, in your own private journal, wherever it doesn't matter) to be able to put into objective words and get out all the crazy undefined emotion inside.
Big hugs.