How much does the injury brought by your family affect you?

My father has a younger brother and a younger sister. He is the oldest in the family. At the age of continuing to study, I have to go out to find a job to support my younger brother and sister and support this family. Like all parents prefer young people, my grandfather prefers uncles and aunts. By contrast, his attitude towards my father is even worse. Uncle and aunt don't like reading, and grandpa forces them to continue reading. And my dad wants to study so much, but he has to come out to earn money to support his family. What's the impact? One is that under the persuasion of many relatives, even my mother wants to have another child, and my father insists that as long as I am alone, I will never have another child again. Just don't want me to be treated unfairly like that again. The other is that my cousin was born when I was a teenager. We were not separated at that time, and there were seven people in a big family together. Adults spoil my cousin and ignore me completely. My cousin is very young, but she especially likes to annoy me. Later, when we both cried, the whole family was coaxing my sister. Even my mother didn't have time to take care of me, only my father, a man of five big and three thick, clumsily coaxed me. Anyway, a man in his forties noticed my feelings so carefully in such a noisy scene. I'm afraid such grievances made him suffer a lot.