I interpret this song as if it's about having a feeling of not being present in reality.
You feel distant from everything and everybody, walking around in your own world.
You're longing to "come back" to the beautiful real world behind the "wall" inside of your head. You're longing to feel and sense everything around you again.
But that's just my interpretion of the song, probably because this is what I'm dealing with right now. The song could also be about being tired of the everyday or it could be about sorrow after death or a break-up.
I interpret this song as if it's about having a feeling of not being present in reality. You feel distant from everything and everybody, walking around in your own world. You're longing to "come back" to the beautiful real world behind the "wall" inside of your head. You're longing to feel and sense everything around you again. But that's just my interpretion of the song, probably because this is what I'm dealing with right now. The song could also be about being tired of the everyday or it could be about sorrow after death or a break-up.