I imagine that he means stuck together pieces literally, as in our physical bodies which are made up of many parts. He wishes to be free of his physical form and move on to something more satisfying , but this is not easily done. He may fear that he is trapped in a karma loop until he has improved himself to the point of breaking free. And although he knows he is supposed to be focusing on making progress, he doesn't care.
I imagine that he means stuck together pieces literally, as in our physical bodies which are made up of many parts. He wishes to be free of his physical form and move on to something more satisfying , but this is not easily done. He may fear that he is trapped in a karma loop until he has improved himself to the point of breaking free. And although he knows he is supposed to be focusing on making progress, he doesn't care.