I hope you read this because I think this is the most important thing young people can know -
No, not "go to college" and all that BS. What I think is keep your options open.
Try not to get into anything that you cannot easily get out of. Avoid things that can mess up your life for years to come. Examples include, do not enlist in the military, stay out of legal troubles, wait before marrying or having kids, stay off the drugs, booze, and even nicotine (avoid chemical addictions) do not go into debt needlessly.
Do not be sad over the things you want but do not have, be thankful for things you do NOT want and do not have.
Maybe you do not know where to go in life right now but if there are none of the aforementioned burdens, the road is yours to go where you like.