Okay, I know that you're such a long ways out from this (literally over a decade from needing to even have decided), but I'm going to give you some advice anyway.
I understand where you're coming from. I really really really do. I was there. Heck, I still might be there. But this is a terrible reason for wanting to become a neurosurgeon. Once you become a doctor, your actions have direct and enormous effects on other people. You will be enduring days/weeks/months that are much harder than anything you could have imagined up until this point. And you will be doing that for a long time. A very long time. Neurosurgery residency is as long as middle school and high school combined. 7 years. And that's just residency. There has to be a driving force other than "this is hard so let's do it". However, the nice thing about wanting to be a neurosurgeon (one of them, anyway) is that you have literally an infinite number of chances to do something else. I know you have no way of knowing this yet (and to be perfectly honest, I don't either).
Here is what I am going to recommend:
1. As you grow up, go through high school, college, medical school, look for things that you like. Look really really hard. Like as hard as you can. See if you can find something else, anything else that you find engaging - that you can do for the rest of your life. Give things an honest shot, not just "oh okay I considered it next". If you get to the point where you're a 3rd/4th year medical student and you've found nothing that seems like it fits you as well as being a neurosurgeon, then that is the point where you decide, knowing that it is the only thing you can find that you want to do. This is not advice from me - just advice given to my by a very wise mentor and advice that I've been continuing to take to heart.
2. Read the book "When the Air Hits Your Brain" By Dr. Frank Vertosick. I think you'll like it.