Jeez, that is a hard one, you have to go back through your childhood, through you teen years...I think there is a different one for each time.

Childhood: "Indiana Wants Me." can't remember the name of the singer it was a one hit wonder.

Teen years: " When She Looks at Me." Tonic

College Days: "Swan Dive." Ani Difranco

Now: sadly "Your Beautiful" James Blunt and "Blowers Daughter." Damien Rice