when i read this i thought it was from my wife:

all the same symptoms but been here a lot longer, the best thing i find is to get away to hotel during the weekend and just do nothing, stop thinking about things and try to relax, easier said than done, reading a book sometimes helps and if all else fails go to a doc and get a prescription for Prozac, sound OTT but will resolve the problem.

PS welcome to EXPAT life and Qatar