(This is me right now with my book launch/signing coming up this Saturday.)
My cure: a chill-out song. The entire drive to the radio station (which was about twenty minutes) I had this song on loop:
This song relaxes me. As soon as it comes on, I'm singing along, my shoulders swaying, and all the stress and anxiety magically melts away. Of course, as soon as I parked and turned it off, BAM. Anxiety-city. But that's okay because the interview went well and now I know I can do it (yay me!). But I'm thankful for chill-out songs like BUDAPEST that help take the worries away, at least for a little while.