I knew since I was four years old that I wanted to be a doctor. However (living in a non-science family like some of you mentioned), I didn't consider myself a science person until I took classes in high school. So at the beginning, Dad encouraged me to try and rooted for me to succeed (this makes me the person that I am today). As I studied, I found at the beginning that I enjoyed Physical Science, and then I really enjoyed Chemistry. (Since I have been studying Chemistry, I have apparently became too odd to talk to sometimes. 
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Not all things were clear to me when I first entered college, but one thing was certain: I wanted to major in Chemistry or Biochemistry depending on which the college would offer. Luckily, I ended up at MSSU and am now finishing my Bachelor of Science degree with a major in Biochemistry. Here many of my instructors including Dr. Gilbert, Dr. Ennis, and Dr. Donelson have made learning Chemistry fun and exciting, and they have rooted for me also even when the way seemed tough. After these years have passed, I find myself interested in the Chemistry behind living things, so Biochemistry was the right way to go especially since I want to enter medical school and/or a graduate program.