I believe that one unhappy thought about yourself places handcuffs on you. After you start to think of more and more horrible untrue thoughts about yourself, you start to gain links, which turn into chains that keep you down to see what's in front of you. If one person in the world doesn't believe you're horrible, then it starts to erase all the chains you have placed on yourself over the years.
Panic! At The Disco: This is Gospel (piano version)