["Journal of Personality, EarlyView. ", "\nABSTRACT\n\nObjective\nIn popular discourse, personal success is often attributed to mindset. In psychological science, such claims correspond to self‐related core beliefs—generalized self‐representations. However, the lack of a comprehensive framework has prevented systematic investigation of their links to socioeconomic inequality. The present study aimed to provide the first systematic mapping of how socioeconomic status (SES) is reflected in individuals' core beliefs.\n\n\nMethod\nBuilding on the CorBel model—an integrative taxonomy of 97 belief nuances derived via natural language processing—we analyzed two preregistered, SES‐representative national samples (Germany: N = 435, UK: N = 266).\n\n\nResults\nPositive beliefs (e.g., competence, autonomy, trust) were associated with higher SES, whereas negative beliefs (e.g., insecurity, unworthiness, pessimism) were associated with lower SES. These associations replicated across SES indicators (education, income, wealth) and across countries, explaining up to 20% of the variance in SES outcomes.\n\n\nConclusions\nThe findings offer the first systematic mapping of how socioeconomic inequalities are mirrored in individuals' innermost psychological constitution. Core beliefs emerge as potential targets for interventions with both societal and policy relevance.\n\n"]