Sales and marketing professionals face chronic stressors, including performance targets, rejection, role ambiguity, and environmental uncertainty, necessitating psychological resilience for sustained well-being and performance. Drawing on Conservation of Resources (COR) theory, Self-Regulation Theory and positive psychology frameworks, this study examines how self-determination, self-regulation, mindfulness, and salesperson resilience predict job satisfaction and career well-being among 275 professionals from Indian FMCG, retail, B2B, and jewellery sectors. Employing a cross-sectional survey design, data were collected, and descriptive statistics revealed high mean levels while Pearson correlations demonstrated exceptionally strong interrelationships. Theoretical contributions include empirical validation of resilience as the dominant “black box” mediator subsuming motivational and regulatory processes, challenging fragmented sales psychology models. Practical implications emphasise resilience-building interventions—transformational leadership training, post-rejection debriefs, and mindfulness programs—for reducing 20-30% salesforce attrition. Limitations encompass cross-sectional design and non-probability sampling; future research should employ longitudinal, multi-source approaches with refined measurement.