One possible version:
My biggest problem is that I'm too busy. When I was young, I used to have so much free time, but these days I stay in school all day. Before I started high school, I used to spend a lot of time watching my favourite tv programmes, but now i have to study. I love music, and my mother used to take me to concerts. These days, I hardly ever have time for concerts. I have to go to different classes at weekends.
I'm very tired. I really miss the old days. I wish I wouldn't grow up.
Everybody will learn to grow up, when they are small, they have to overcome all kinds of problems, because they are young, so they will take more time to grow up. The road to be mature is not easy, the kids should learn to be nice to other, be considerate and take care of others. Of course, it need time to be an adult, the road to grow up will be mixed with happiness and sorrow.
One day, my father taught me to fish at the river, I was so impatient, straight to my father said: "know, know." Dad sighed, quietly walked away.
I took the fishing rod in the river for two hours, a fish did not catch up. Daddy it is coming up again and then fishing the note said again, I followed, the fish caught up.
This is my mental growth process.
I am ten years old, though I am not mature, I am on the way of growing up. Two years ago, I was very shy, I even couldn’t talk to the strangers. But now I have made progress, I can talk to the strangers and make friends with them. I am not the shy girl any more. I have grown up gradually, in the future, I will become more and more better.
High school years, we spent six years before the flowering, 17 in the rainy season. Once in the confusion, and in quiet sighed for yourself in confusion and calm, we grow up. Hence, began to use my own brain to think about everything around, perhaps this is shallow, but we should not blindly follow a group of pride, to the child with reason and mature farewell once young ignorant.
Sometimes I want to grow up quickly, so I can be an adult and enjoy their moment, but my parents tell me that being mature needs to pay some price. I sometimes will make my parents angry, because I make the mistake. They tell me that it is the price of growing up. Being mature means I have to learn from the mistake.