Have you ever tried to draw a straight line, only to find it turns out all wrong? Or, wanted to show 1 at a party but the song you’d practised so many times suddenly 2 more difficult? I've had both these 3 ．As a Senior 3 student, I have to 4 many exams．Each time, I enter one, thinking “I 5 fail this time．”, I get a low mark． But don't be surprised --- it's not 6 we don't try, or do enough preparation, 7 take it seriously．On the contrary, it is because we put ourselves under too much 8 ．It is thinking: “I must…” that