The speaker expresses deep frustration with their current confined situation, describing it as a "shattered prison" that causes weariness and longing for freedom. They are exhausted from being trapped and constantly yearning for the outside world, which feels distant and unreachable.
The thing that irks me most is this shattered prison, after all. I'm tired, tired of being enclosed here. I'm wearying to escape into that glorious world, and to be always there: not seeing it dimly through tears, and yearning for it through the walls of an aching heart, but really with it, and in it.