Sounds really pathetic, but I did (still do to be fair) after getting fired from a job, of all things! But that job was a way of life for me, and losing it changed a LOT of things for me...

As for symptoms; tired a lot more, lack of enthusiasm to do anything/go places/see people/etc, loss of appetite (I'd often just not bother eating at all, and anyone that even HALF knows me, knows that is unlike me!), loss of sex drive, finding friends and family, and people in general, annoying/irritating/picking holes in them and their character, almost pushing them away when I probably needed them the most... I'm usually a very rational thinker, and quite logical in my thoughts and actions, but lately I've been well, just NOT thinking, and not seeing things as I would normally, and subsequently I've upset/hurt/alienated people I care about the most by not thinking though my actions or their consequences, and then when I realise this, it only makes me feel even worse, and I get into a proper downward spiral of self-loathing

My problem is I spend too much time thinking; too much time thinking the "but if only..." and "what if..." and "if I had..." etc etc, which makes it all the worse. Cos once you start thinking like that it's very hard to stop. Once you dwell on it, it's hard to make it go away. I still do now, and added to the fact my future is uncertain at best, and all that I have is properly in jeopardy, isn't the best of feeling's

I'm still battling my inner demons, and it's hard. SteveCossie hit the nail on the head really, as in how you feel....