写短文150字左右

I am a native speaker from America. Hope this helps!

I've been wanting to become a doctor since childhood. It hurts my heart to see the patients suffering from various physical and mental diseases. I understand that it is a long road to become a doctor, but I am resolute to pay the work. Still in middle school, I will start reading books and magazines concerning basic biological information and new medical advances. Of course, math and science are the foundation of all academic subjects, so I will try to do my best in these classes. I plan on finishing a graduate's degree and turn my dream of helping the needy into reality.