The song starts off quite soft and smoothly, but then becomes more angered and frustrated still striving towards the same message. The parent, at first, is just telling the child what they expect from them, but then the parent becomes more fed up and starts to become more pressuring towards the end of the song.
Alanis has said that her parents have been nothing but great to her and have been very supportive of her career. So the only explanation for this song is that it is Alanis' conscience, and she is pushing herself towards this excellence.