PLEASE ANSWER: I have this feeling that I will fail in my quiz on Tuesday. I am scared?

[Michelle]

I am doing my masters now. I didn’t do great in my undergrad. As a result anytime I have a quiz or a test, even before I start reading I have this feeling that I will fail. I am very scared. I can’t afford to fail the quiz it is worth 15% of the grade. I have read the same material for a previous last in my undergrad and I did well. But there is this feeling that all the other grad students must be smarter than me and that I will fail. Please help me, I just can not stand this thought anymore. It is killing me. I don’t want to fail. My quiz is on Tuesday at 6pm so I have time to review the material well, no work or no school tomorrow. PLEASE tell me what I should do to stop this feeling and study with complete focus. Please help me, I am very scared