How do I stop being anxious about an exam

[yuujhb837]

So I have an exam on Friday, for which I have been studying a lot, but I keep thinking to myself that it's probably not enough study, I get really anxious about failing it and I know if I get anxious during the exam I won't be doing my 100% so. Do you guys could give me advice on how to confront my anxiety and fear of failing? I'll appreciate it a lot!!