I graduated from high school on March 9. I have a lot of people to thank. My family, friends, teachers provide a powerful underpinning for me. It’s certainly extremely nice of them to meet with me. If I had made a different choice (or "... made different choices"), I could have not met many people whom I met in high school. Leaving precious people makes me really lonely, but I think it’s important. I want to make efforts in a new place and grow into a mature person. The time spent in high school was flooded with happy memories and became an unforgettable memory for me.
If only I were a high school student all the time!
Well written!