Can any one correct me?

Hi, My name is Amirreza. I'm 22 years old. I have years of exprience in sports such as chess, tennis, and also in art, such as painting. I have painted around 50 oil paintings during 3 years of training when I was around 8. But unfourtuntely, I quit this profession after some time, mainly because of losting interest. At the age of 14, I enrolled in an institute to learn English . It took me 6 years to complete all of the courses and get my certification. At the time, when I was 18, I decided to choose Mechanical Engineering as my major while my inner voice always told me to choose Teaching English. But with the insistence of family and whom ever was around me, I was condemned to accept. Although I did perfect at the time when I was at college, I decided to not allow others to take charge of my life. So as you may expect, I changed my major to Teaching English. I was lucky enough to be admitted in one of the best, if not the best, univeristy of Iran, but what was greater and more precious to me was the decision that I made that I will never ever regret. I'm proud of myself in this regard because of all of the inequalites that I passed, all the hardships that I left behind, and all of the hours that I put in, day and night. As for my future professional plan, I really want to become a teacher or an examiner and more specifically in the field of speaking. Because I'm obssesed with speaking English and I never get tired of it. And if you ask me, I can definitely assure you that I developed this skill way better than others. Well, that's the end of my story. Wish me luck and, by the way, just a side note: Never fear and always persevere.