Yes liz, I know what that's like! You put it perfectly: a feeling of total unreality. I find I feel like that during all my panic attacks. You lose awareness of your surroundings, all you can think of are the disturbing thoughts racing through your mind. Its scary, especially when one bad thought builds on another, and so forth, until you can't take it anymore, and just have to get out of wherever you are.
At times like that, you just have to be gentle with yourself, not aggressive. I used to try the aggressive approach, like telling yourself to "Cut it out!" and "Stop being so stupid," and whatever. It doesn't really work. You have to ease yourself back into reality. Concentrate on your breathing - evertime you start to think of something else, force yourself to thinking about your breathing again. When you can focus a bit more, picture a beautiful, calm place - like a quiet forest, or a misty valley, or something. Close your eyes and pretend you're there.
It works! ^_^
\"We are all in the gutter, but some of us are looking at the stars..\"