On the other hand, there are also dark moments, such as everyone has, when you think you’ve achieved nothing at all, when it seems that the only trials to come to a good end are those that were determined to have a good end from the start and would do so without any help, while all the others are lost despite all the running to and fro, all the effort, all the little apparent successes that give such joy.
Yep, I’ve had days like this where I’ve felt powerless and helpless. (Not good for a primogeniture!) I bet that Joseph was feeling this way throughout the novel. Perhaps this sheds a little light on the ending.