Test anxiety and it's impact

So today I'll be talking about a really uncomfortable topic for a lot of students and learners here.

Test anxiety is a psychological condition involving extreme distress, worry, and physical tension before or during exams that impairs performance. It combines physical symptoms, emotional reactions, and cognitive challenges.

So personally speaking I have faced this quiet a lot of times in my life and I never knew what to do, exams are one of the very frightening events we go through in our lives no matter how much you have prepared for it or you haven't it still affects you.

The goal of this post is to lay a foundation stone and stir up this sub community about this very common experience and to discuss more about issues like these. 

If you read till here, what was/is your way of dealing with test anxiety and how efficient do you think it is?