Brooks Buser shares lessons from missionary work in Papua New Guinea, the world's most linguistically and culturally diverse nation. Having settled among the Yembiyembi people and been adopted into their clan system, Buser identifies six key principles three that explain why missionaries fail and three that demonstrate how missionaries can succeed. Buser's experience navigating language acquisition, cultural integration, and sustained missionary presence reveals both the common pitfalls and proven pathways for long-term effectiveness in cross-cultural ministry. Evaluate your approach to cross-cultural ministry against the tested patterns of what enables missionaries to see the finish line. Scripture: Deuteronomy 31:6; Matthew 28:20; John 12 Topics: Missions, Cross-cultural ministry, Papua New Guinea, Language learning, Perseverance