As said in the other answer, it is uncertain what point in the story is being specified. That being said, Pip's personality goes through several distinct stages as he grows into maturity.
As a child he is a kind, open-hearted boy with no expectations beyond becoming a village blacksmith like his brother-in-law Joe. He is humble and unassuming.
When he finds out he has "great expectations" and is provided the money to become a gentleman by a secret benefactor, his personality changes. He becomes a snob and becomes ashamed of Joe. For example, he sends a gift rather than going to visit his kind-hearted brother-in-law when he is in the village. Pip also lives lavishly to keep up appearances, and although he has a good deal of money, gets into debt. His snobbery becomes apparent as well at his horror that Magwitch, the former convict, is his benefactor.
After his stage of snobbery, Pip is humbled. He learns to appreciate and even love the dying Magwitch, and he is deeply moved when Joe, who lives so simply, pays his debts. Pip apologizes to Joe for his bad behavior. Pip has come to realize the true worth in a person doesn't reside in external appearances but in a person's heart.