I am assuming that you are a freshman in high school. Your first goal will be to work your hardest to get your high school education. The next step is nursing school. Many hospitals are requiring a nurse to have her BSN (Bachelor of Science in Nursing degree) in order to be considered for a job so when it's time to start looking for colleges/universities keep that in mind. If, when you finish nursing school, you are still interested in working in a NICU my suggestion would be to look around at all possibilities-a pediatric hospital, a community hospital with a NICU, a labor and delivery unit with a nursery to help you get started in caring for babies. Some NICUs want a new nurse to have some adult experience first-it helps you develop organizational skills.
I started out, after graduation from college, at a Pediatric hospital. That's where I gained my knowledge and comfort in caring for babies. With that knowledge I went on to be the nurse who attended deliveries on a labor and delivery floor and also took care of the newly delivered babies. Now I'm back in my role as a NICU nurse in a community hospital. I love what I do.
Good luck with all of your future plans.