Katy Perry on Russell Brand Divorce: 'It's Like I Got Punched in the Face'

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Katy Perry's "Prism" is the first album since her 2012 divorce from comedian Russell Brand and it shows.

Perry, 28, admitted to The Sunday Times that she writes songs "very vulnerably" and has a "heart-on-my sleeve approach," especially with this album.

Indeed, when speaking to the Times about the first song on the album, "By the Grace of God," she said she was in "bed for about two weeks" after her surprise split from the "Rock of Ages" actor. The song tells the "autobiographical" story of lying on the bathroom floor, wanting to give up on life.

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"I'm not the kind of person that is always, like, 'What doesn't kill you makes you stronger,'" she said. "I was pretty f*****, yes. It hurt a lot; I got a good knock."

The "Roar" singer had lost hope after Brand served her with divorce papers at the end of 2011. The divorced was finalized a few months later in 2012.

"What I wanted to call this record at first was 'Adult Reality,' because 'Teenage Dream' was me so high on that cotton-candy cloud, and then it's like I got punched in the face and kicked down the stairs a couple of times," she said.

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Perry, who has now found love again with fellow singer John Mayer, added that during the split she might have carried an outward sense of confidence and self-identity, but not the "inner kind."

"My self-worth was in someone else's hands, which is never a good idea, because it can be taken from you at any time," she said. "And it was, and it was shattered. But I don't do that anymore."