My anxiety has been so bad for the past few weeks that I can't pay attention to anything, sit still, or relax in any way. I'm not anxious about any particular thing, it's just a general feeling that I'm in danger or something bad is going to happen to me. The most recommended anxiety relief things like deep breathing, exercise, meditation, sleep well, etc. work when I'm anxious or panicking about something in particular, but don't really work when I have this vague, non-specific anxiety. Any advice?