I think it's about being tired of the pressures of the media, and stress caused by lots of things.
The power and aggressivness of the song suggests that it's a feeling that's been bottled up for a long time, but she's had enough and lets it out in this song. The line "Taken all that you wanted/ Now there's nothing that can change the way I feel" suggests that she's put up with it for a long time, but isn't gonna take it any more. This is supported by the explosion of the powerful, cathartic chorus - Great song! :)
I think it's about being tired of the pressures of the media, and stress caused by lots of things. The power and aggressivness of the song suggests that it's a feeling that's been bottled up for a long time, but she's had enough and lets it out in this song. The line "Taken all that you wanted/ Now there's nothing that can change the way I feel" suggests that she's put up with it for a long time, but isn't gonna take it any more. This is supported by the explosion of the powerful, cathartic chorus - Great song! :)