Re: Two words, friend.
Ah, the joys of teenagers. I always liked Heinlein's "bunghole theory" of child raising. As puberty arrives, place child in barrel. Feed thru bunghole. At adulthood, let former teenager out.
Seriously, the best way is to keep talking to them and relating on an adultish level. Have patience (not easy for moi) and set (wide) limits, but do set them. Be prepared for setbacks.
But know this, they do grow out of it... if you let them live.
-p