I agree with is2rockandroll. What I gather from this song is that the father was perhaps a bit of an angry man. Well, not so much angry as simply troubled. He wouldn't let his wife help him (the guide dog reference), he buried himself in his work to keep his mind off of things (the office was a dungeon), and, at a younger age, he attempted suicide. For that, he was ostricized by his family: his mother left him, his dad lost it, and his sister tried to help him, but again, there are those walls the father seemingly has built up around him.
At the end, the speaker shows that he really wishes his father would just apologize, perhaps for not giving all of himself to his family and holding so much of himself back.
I agree with is2rockandroll. What I gather from this song is that the father was perhaps a bit of an angry man. Well, not so much angry as simply troubled. He wouldn't let his wife help him (the guide dog reference), he buried himself in his work to keep his mind off of things (the office was a dungeon), and, at a younger age, he attempted suicide. For that, he was ostricized by his family: his mother left him, his dad lost it, and his sister tried to help him, but again, there are those walls the father seemingly has built up around him.
At the end, the speaker shows that he really wishes his father would just apologize, perhaps for not giving all of himself to his family and holding so much of himself back.
That's just my interpretation.