How do i get over anxiety over work experience?

I suspect this is not the first time you have felt performance pressure or insecure or "disliked" or "judged" or intimidated by someone in a superior position. I bet you have felt like that for a long time in various situations and don't really know why or what to do about it. Find a counselor who specializes in ISTDP -short for "intense short-term dynamic psychotherapy." I'm serious. It is vastly different from typical counseling. It deals with things just like this, and it will help you much more than any self-help book or any handful of tips from this forum.