The personality trait of neuroticism (proneness to negative emotions) leads to avoidance, which maintains negative emotions and can lead to emotional disorders such as depression and anxiety

Neuroticism and Disorders of Emotion: A New Synthesis. David H. Barlow, Andrew J. Curreri, Lauren S. Woodard. Current Directions in Psychological Science, August 23, 2021. https://doi.org/10.1177/09637214211030253

Abstract: We describe an approach to anxiety, depressive, trauma-related, and other disorders, which we conceptualize as “emotional disorders” because of shared underlying dimensions uncovered by the study of traits or temperaments. We then explicate a functional model of emotional disorders based largely, but not exclusively, on the temperament of neuroticism and describe common factors that account for the development and maintenance of these conditions. We conclude by describing, and presenting supporting data for, a unified transdiagnostic approach to the treatment of emotional disorders that directly targets the underlying temperament of neuroticism and associated temperamental characteristics.

Keywords: neuroticism, transdiagnostic treatment, emotional disorders