I have a couple. One represents how I only let certain people in because i have been hurt in the past. It also represents how, because of the way I dress, people think im weird and they judge me based on that so they miss out on who i truly am. Its by one of my favorite bands - Tokio Hotel. The link to this video is:
YouTube - Tokio Hotel - World Behind My Wall

Another song is by Simple Plan and it is called " Welcome to my Life" This song describes me perfectly i believe and it calms me down when im mad or whatever when i listen to it. The link to this video is:
YouTube - Simple Plan - Welcome To My Life (video) Album Version audio