what life lesson does ghost learn from his relationship with luke from the book ghost

Lu Richardson is an albino black kid who runs track for the Defenders. Lu is very fast, and no one except Ghost can beat him. Lu strives to do his best to avoid having to deal with his appearance, constantly being humiliated that he is an albino. Early in the novel, Lu and Ghost are adversaries on the team, but come to befriend and respect one another by the end of the novel. Ghost learns about perseverance and determination in the face of seemingly overwhelming obstacles.