This scene depicts John getting whopped by his father (who is not actually his father) This relates to the quote because of the way he knew that he would eventually overcome this obstacle. despite this experience being extremely painful, John still soldiered on.
During this scene, John escapes Gloria's household. This particular scene relates to the quote because of the way that John escaped, despite the dangerous predicament he was in. He still went on fighting, despite feeling lonely in the situation.
In this scene, John tries to fight against his father when he was being put into the truck. This relates to the quote because he believes that fighting back against the man who is not his father is the only rational thing to do.