With Generation Z eventually becoming the predominant workforce, their corresponding patterns of behavior are starting to have greater effects on standard management paradigms. The self-criticism and "lying flat" ideology that Generation Z employees are expressing function as a challenge to conventional management methods. These behaviors stem from social and psychological factors, influenced by an era marked by widespread uncertainty and economic challenges. However, the theories surrounding these behavioral traits often lack sufficient empirical evidence. This paper, grounded in behavioral science, uses historical data and future trends related to birth rates and student populations in China to explore the psychological mechanisms behind these traits. It aims to construct a Flexible-Differentiated management model that integrates independent, dependent, mediating, and moderating variables to systematically understand the impact of these behaviors on organizational effectiveness. Drawing upon a comprehensive review of the literature and empirical evidence, this paper offers theoretical foundations and practical actions for organizations seeking to leverage the potential of Generation Z employees.