Answer:
Answer part _1_ Walter is more selfish and stubborn in the beginning of the story. He always tried to take the easy route out of things but he started to change after he lost all of his money after his friend’s betrayal.
Answer part_2_
Throughout the play, Walter offers the view that he is the model family who struggles to support it and tries to discover new, better schemes to secure its economic prosperity. Difficulties and barriers impeding his and his family's progress in achieving this prosperity constantly frustrate Walter. He believes that money will solve all their problems, but it rarely succeeds with money, Walter often fights and argues with Ruth, Mama and Benitha, except that in the end, he realizes that he cannot raise a family out of poverty alone, and seeks strength in union with his family. Once he starts listening to Mama and Ruth express their dreams of owning a home, he realizes that home buying is more important to the well-being of the family than getting rich quick.