Well I must admit I have a few. You know what, I just realized how meaningful Trent's lyrics are. Compared to all other artists, I truly think Trent actually cares about what he writes. Not just senseless, meaningless lyrics I hear in every other song.
Terrible Lie - This song really gets me through some rough times in life. Everytime something terrible happens (no pun intended

) I listen.
Everyday Is Exactly The Same - The more I listen to this song, the more I think about how true it is.
Somewhat Damaged, Wish, Gave Up, The Big Come Down - They all have a main theme here, give or take a different stress of the idea. You try so hard, but give up and don't give a shit anymore.
Other than that, I love almost every song Trent has made. Gets me through the day!