The Big Five Model of Personality is one of the most established personality theories in psychology. The five pillars of this model are its five traits: Agreeableness, Conscientiousness, Extroversion, Openness, and Stability.
The job market is filled with a diverse array of jobs suited for an equally diverse set of personalities. A sales associate probably won’t have the same personality as a software developer, nor should they. There are very few personality traits that are predictive of success across every type of position. However, extensive research has demonstrated that one personality trait is correlated with success in just about every job out there. That trait is Conscientiousness.