Is it normal to be so scared and doubtful?

I think it's perfectly normal. Sometimes it seems that a lot of people are A LOT better than you and you have no chance of success. If this isn't normal, then I've got the same problem you have! But in all seriousness, it is natural to feel unsure of yourself especially at this age. This feeling runs rampant in competitive high schools, where it seems like everyone is fighting to win some contest that doesn't exist. It's great you have a dream, being a doctor is an INCREDIBLE honor, and I could never imagine tackling such a difficult task of becoming one. Remember, not all those people who are "more suited" for medical school than you are aren't all trying to become doctors. Plus, like you said, it takes a LOT more than just GPA scores and other things to become a doctor. You certainly have to have drive. You can't become too doubtful of yourself, even though it is normal. The doubt is another challenge to overcome. Time for me to bring out the cliques: Give it your all, no matter what, because in the end, you might not make it. But there are no regrets. And if there is one thing more painful than failure, it's regret. You only get one life, or if you believe reincarnation, you only get to go through this existence once. So, you really should try become a doctor.