Florence and the Machine - Rabbit Heart

I like this song by Florence and the Machine. I like the chilled music and how she sings so perfectly and how her voice suits every verse.
A part in the song says,"Here I am a rabbit hearted girl, Frozen in the headlights, It seems I´ve made the final sacrifice." It reminds me of being scared or anxious about something. So I listen to this a lot when I feel like this.