The most dishonest thing I have ever done

It happened when I was an elementary student. We were having the final test. I was so confident that I didn't prepared the society before the quiz. But I found that one question I couldn't answer. It was not a difficult one, I know some of my classmates would get 100 in this subject. I used to be the top 3 in my class. I was unwilling to lose. So, I cheated. I got 100 grades. But, I was not happy at all. I felt guilty. I didn't want to tell anyone, so the feeling of guilt became bigger and bigger. Until one day my teacher came to me, I was so unhappy. My teacher told me that someone saw I cheated in the test. And ask if it was true. I was too nervous to eace my teacher. Finally I admitted. My teacher didn't blame me but told me that she wanted to see a new me after winter vacation. I appreciated her so much. After that, I never cheat, no matter how I want to get the good grades.