It depends on you. If writing is easy for you, if you have the determination to finish what you start, then it will be easy. Writing is hard work and you have to keep at it and practice until you become the best you can be.
No it is not easy
not easy
not easy at all
when did Dr Seuss become an author
no
wy did barbra park become an author
because his father told him to become an author
go to simplesite.com
how did dav pilkey become an author?
He loved writing as a child which has helped him become an author today.
How young a teen are we talking about? At any age, just put a pen or pencil in your dominant hand, place the business end of it on a piece of paper (alternatively, fire up the old PC or MAC and plug in the keyboard), put your other hand on a rock, look up into the sky and announce: I AM AN AUTHOR!! Another way to become an author: You need a writers' block first. (Hint: not available in stores)
There is exactly zero way to become a wizard, easy or not.