DAUGHTER DRAMAS

My daughter is a about to be a teenager and from a child who would listen and try to make her dad happy, she is now challenging everything I say. It doesn't matter how trivial the matter she seems to just want to prove she is old enough to make decisions even if what I've told her to do is something she wants to do. When she sees me getting frustrated because of time restraints she enjoys trying my patience. Every strategy I've tried doesn't work but when I get angry and raise my voice she gets in line. This sucks because I want to be rational but taking the caveman approach gets a better result. Any ideas to the people out there?