Proofreading ?

Hi teachers, please help me correct any mistakes you find in my Paragraph. Thank You!
My family
In the happiness of everyone, the family has always been something sacred that we wish it would be perfect. My family are four peoples which are my parents ,my brother and me. My mother is a nurse and take a responsibility to take care our family. She cure and give the medicine for patients. Her job requires the skills of treatment and the high concentration. She always goes to work early everyday complete her tasks quickly. After finishing working at the hospital, she spends the rest of time doing household chores. Of course, if I come home from school early, I will help my mother. The next, A important person of the family is my father who brings home the bacon. My father joined the army 30 years and is ranked of lieutenant colonel. My mother and him are responsible for supporting for our family's finance. Somebody asked me : "Who do you love more , your father or your mother ? ". I told them that I don't have any answer or I don't know. Because my parents are very important to me and can not be replaced for each other. They are sometimes strict to me because they really want to the best thing for me and prevent me from bad things. The third person in my family is my brother. My brother is an engineer and repairs the machinery , the cable and the internet network. His company is about 15km from my house so he worked there all day until late at night. He is a good person and always help me when I'm in trouble. In summary, I love everyone in the family. They give me a life with a lot of laughter. I just said thank them very much.