Well, first let me say NYC is in a class by itself. I personally don't think it's that rough and tough. Actually I love NYC, whenever I go on vacation I can't wait to get back home (There's no place like home
). Your a little bit younger than me, so coming here on your own will be kinda rough for you.
Do you have friends/family here? Where will you stay?
Words of advice:
Secure a job before you move here.
Be prepared to look for a roommate, or two, or three because the rent is sky high in Manhattan, reasonable in parts of Brooklyn, Queens, & Staten Island.
If you have a car, don't think about moving to Manhattan, finding parking is tedious and parking in a lot is expensive. Hell, just sell the car and ride the train with me
I'm here if you have any more questions.