I know how you feel. I go through the same issues and I'm thankful everyday that my wife finds the strength to put up with my moods and behaviors. I too have many nice things going for me. I have 3 healthy children and a loving wife and we live in a modest home in the suburbs. Not rich by any means but we're making it and I SHOULD be happy. For some reason though my brain decides to either get pissed or so depressed that I can't function. I hope things turn around for you. I struggle and fight everyday just to keep going and I know how exhausting it is.