describe a person who has helped you become who you are today.

A person who has helped me become who I am today is my father. Firstly, he taught me to be independent since I was just a child. He never decided for me, just explained to me the advantages and disadvantages of something and left me free to choose. For example, when I was a child he persuaded me to pick my clothes by myself, no matter if they had good quality or were proper or not. So I have a very independent personality now.
Furthermore, he always cared about my education. He believed in my talent and encouraged me to study hard. He always paid attention to my grades and was a great encouragement. For example, since he knew that I would like to have a car, so he promised me that he would buy it for me if I passed the university entrance exam. It was a great motivation for me and his plan panned out. Because of his support, I could graduate with a MBA.