Hey guys! I'm Khing ,I'm 15 years o

Hey guys! I'm Khing ,I'm 15 years old. In the future I would like to be a doctor,seriously , even I scare of blood.I mean ,some people keep talking to me that I can't stay with thing i scare , but trust me ,I can , so yeah they are so annoying .I want to say something like 'It's non of your business' but i can't . So , you know,sometimes life sucks , get used to it.
How can i be a doctor? I need to be diligent , that's one thing I won't start yet. I need to be wise, another thing
That's hard for me.