Definitely. It's usually surrounding anticipating anxiety-producing activities (the worst for me, are going to work and paying bills), but there are times when I'm really not sure why I'm so anxious. It really sucks, so I feel for you. As someone said, keeping busy can help. When I'm really involved in something (including being at work once my worst fears aren't realized) I feel better. I guess it's about distracting myself from it.