Behind every challenge is an opportunity. As a milestone for both societal and scientific development, the new millennium highlights the growing challenge of change and diversity. Modelling the agentic self in context is the opportunity it reveals. Developmentalists can seize this opportunity by increasing our emphasis on three aspects of developmental research. First, developmental research can examine the influence of context on development more aggressively to test the generality of developmental mechanisms. Second, developmental research can integrate an organismic perspective on human development more explicitly to account for the role of human agency in development. Third, developmental research can apply advanced statistical and analysis methods more sophisticatedly to effectively model the agentic self as it evolves across time and context.