I am a flower in the greenhouse. I can't stand a difficult sentence, let alone an unpleasant thing. My heart is extremely fragile and vulnerable. How can I change it?

Sister, I am 24 years old and grew up watching my parents quarrel. I have been struggling since I can remember until I went to college. When I was young, I was scared to cry until I graduated from college and went home. I don't care. I lived in my grandmother's house before junior high school and was often beaten. When I was in primary school, I would steal money from my family, call names, and don't like studying. I also stole stationery from the stationery store and toys from my brother's house. Became very rebellious after entering junior high school. It didn't start to be normal until high school. But every time I go to a new environment, I feel particularly uncomfortable. I will cry secretly at night, and my classmates will cry if they have a bad relationship. In a word, my current personality is sensitive, cowardly and narrow-minded. I will always think about who I am unhappy with during the day. I keep everything in my heart and don't like to express it. I can't be a man, too straightforward and easy to offend people. Sister, what I want to tell you is that you are only 16 years old and still have a long way to go. I hope you can concentrate on your study so that you can support yourself in the future. In fact, there are many people like us. Every child who doesn't like learning, often fights and doesn't study well is almost because of the unhappy family. We have no ability to change the way our parents get along. You can only enrich yourself and think long-term. Trying to keep a small animal can cultivate your patience and love. I hope you will get better and better in the future.