Lyric discussion by sue_defender 

Cover art for Amputations lyrics by Death Cab for Cutie

the motivational speach is for her, the girl/woman from the song. she doesn't believe in herself and she's doing all this because of her low self-esteem. why should she change for a guy? so gibbard is actually saying, believe in yourself, and the speach is just putting an emphasis on that.

that's how i see it.