How johnny's letter helps Ponyboy see the gang situation more clearly?

Johnny's letter helps Ponyboy gain perspective on the gang's dynamics by emphasizing the importance of personal identity and the futility of violence. Johnny encourages Ponyboy to see beyond the gang's rivalry and recognize the shared humanity in others, including their enemies. This realization prompts Ponyboy to reflect on his own values and the potential for change, ultimately leading him to a deeper understanding of the consequences of their actions and the need for compassion.