The rule of law is not merely a set of written rules but an "institutionalized integrity" in the reciprocal interaction between the state and its citizens, forming the backbone of institutional legitimacy and social stability. This study, employing a mixed-methods approach, aims to provide a multi-layered explanation of the impact of a "culture of law evasion" and the "perception of corruption" on the enforcement of laws within the Iranian judicial system. In the qualitative phase, through in-depth interviews with 30 senior managers and experts and subsequent thematic analysis, four main vicious cycles were identified: 1) erosion of institutional legitimacy, 2) weakening of social cooperation, 3) consolidation of arbitrary discretion and structural inequality, and 4) a defective reproductive cycle between culture and structure. In the quantitative phase, to empirically test the model derived from the qualitative findings, data were collected via questionnaires from 108 senior managers and experts in subsidiary bodies of the judiciary across seven provinces. Data analysis using structural equation modeling (SEM) revealed that the "culture of law evasion" has a significant negative impact on the enforcement of regulations, providing empirical support for the theory of procedural justice. Furthermore, the "perception of corruption" has a significant negative impact on both civil and criminal justice, which corroborates the "quality of governance" theory. The main innovation of this research is the identification of the moderating role of "quality of life," whereby an improvement in quality of life significantly mitigates the negative effect of corruption perception on civil justice. These findings underscore the necessity of integrating structural reforms with cultural and social policies and provide an evidence-based framework for rebuilding public trust and strengthening the rule of law.