“I let you push me past the breaking point”

Katy Perry – Roar Lyrics on LyricsMode
EXPLANATION
She let people take her beyond her comfort zone and never did anything about it.
EXPLANATION
She is saying that she let (whoever that person is) take advantage of let (whoever that person is) step all over her and dictate her and now she is sick of it and getting to the point were she is getting courage and standing up for herself and doesn't need that person.
EXPLANATION
She is saying that that she let someone tell her what to do for so long and now she is standing up for herself. She isn't letting people walk all over her anymore.