Write about a time when you lost something expensive, but gained a valuable lesson in return.

I would never misplace my documents again; I would keep my documents carefully. That was when I realized the importance of keeping documents carefully or pay the consequence.
``Oh my God, I am late again!” I said hurriedly while taking away the documents and rushed off. I ran to the bus-stop to wait for the bus to come urgently. Just then, the bus arrived. I busily searched for my ez-link card to tap on the bus. I arrived at school after a while.
I went to school late. The teacher scolded me for being late again. The teacher told us to pass up our documents now as deadline for submission of our project is today. I was the only one who did not pass up the project. The teacher questioned me why I did not pass up the project. The teacher questioned me why I did not pass up. I replied nervously that I had forgotten to keep my documents in my bag while searching for my ez-link at the bus-stop.
Luckily, the teacher was showing mercy. He gave me a week time to finish the project if I could not find the documents at the bus-stop, but at the same time he punished me by asking me to write lines.
I went back to the bus-stop immediately after school to search for the documents. I was lucky that no one had taken those documents away. I passed up the documents upon reaching the school immediately. The teacher told me to be careful next time.