The Most Dishonest Thing I Have Ever Done

I do not know how to define honesty, and I never think I am a honest person because everyone must have done dishonest things in their lives. Sometimes, telling a white lie is not a mistake, it can help people escape from embarrassing situation. Even though telling a white lie can make people happier at that moment, I still think that telling a lie is not right.
When I was seven years old, I did the most dishonest thing in my life. one day, I played games with my younger sister in the living room. when I was running to catch my sister, I did not take notice of my father's favorite vase. The vase fell to the floor and broke into fragments. My sister and I were scared out of our wits. I thought father would be very angry. He must blamed and punished me. I was so afraid of it that I imputed the mistake to my younger sister. She did not learn how to talk at that time, so I could tell a lie and on one would know. Luckily, I escape from the punishment successfully in the end.
I have not told truth until now. Although my father does not blame me for this mistake, I still felt sorry about it.