Is it the interview that gives you anxiety or the thought of working? I wonder if you made a deal with yourself that you can quit after 2 weeks if you were miserable, if that would help you go through the interview? Even if you quit the 2nd day, the next interview won't feel so overwhelming and scary. If the thought of quitting is a issue, tell yourself you can do it via email, text. Just rip the band-aid off and at least go to a interview, you don't have to take the job.