What the fuck is wrong with me?

OK. I've pretty much felt like crap ever since I got back from my trip. First I felt physically like crap since I caught some kind of cold on the way home, but I have been feeling increacingly depressed as well. I can't put my finger on it. I'm not prone to seasonal affected disorder (quite the opposite, actually). I've felt uncomfortable in my own apartment since I got back, like I'm just visiting this life. It's bugging the hell out of me that I can't put my finger on what it is that is bothering me, to the point that it is making me angry that I can't figure out why I am depressed. Ain't that great? Angry and depressed... how fucking über?!

The only things that I know that I want for sure are coffee, stout, gin, and cigarettes. Everything else is freaking mystery. Aaaaaargh!