I think you don't grow up until you stop worrying about other people's purposes or lack of them and find the purposes you believe in for yourself.
The quote from Orson Scott Card’s "Xenocide" suggests that personal growth is tied to the ability to focus on one’s own values instead of being overly concerned about others' intentions or purposes. It highlights the importance of self-discovery in the journey of becoming an adult. When individuals learn to prioritize their beliefs, they can achieve a deeper understanding of themselves and what truly matters to them.
This perspective encourages readers to seek their own purposes, implying that maturity comes from an internal rather than external validation. By identifying and embracing personal goals, people can cultivate a sense of fulfillment that is not influenced by the expectations or actions of others. This approach fosters a stronger connection to one's identity, leading to more meaningful life choices.