How did Eldon change in "The medicine walk"

I'm not convinced Eldon is a dynamic character. His guilt and sorrow are crushing bet it seems like Eldon was never able to really change. Eldon’s life is largely characterized by melancholia and woe. His deep shame and his inability to ever forgive himself are often catalysts for his alcoholism. By the end of the story Eldon has made some peace with his son but I don't think he had changed.