i kind of looked at it as being about the music industry.. "took a mistake to really show me exactly what they were like" i kind of take that to mean that everything was fine, until she started doing things differently (maxim, teddy, country, the post she made on the message board) and then people didn't like that so much and turned on her. "why do i try to make them happy"..same thing.
i dunno. that was my take on it... i could just be crazy. and it would make sense if it was about teddy and her parents and stuff.