PERSEVERANCE
noun
persistence in doing something despite difficulty or delay in achieving success.
"his perseverance with the technique illustrates his single-mindedness"
this means that pip was at a low point at the beginning of the story and he improved his situation by the end of the story
without the context I cannot do much but you can check how pip felt at the beginning of the interaction to the end of the interaction. what did Joe teach pip how did it change him?
( from an earlier question asked from another person
I believe I remember that joe is a convict. from that stand point did pip have a resentment toward the convict ( Joe ) because of his actions? did the convict ( Joe ) give him company he desperately needed? did the convict ( joe ) lift his spirits?)
hope this helps!