Our personality is defined as a set of traits that can explain or predict a person’s behavior in a variety of situations. In other words, personality is a set of characteristics that reflect the way we think and act in a given situation. Because of this, our personality has a lot to do with how we relate to one another at work. How we think, what we feel, and our NORMAL behavior characterize what our COLLEAGUES come to expect of us both in behavior and the expectation of their interactions with us. For example, let’s suppose at work you are known for being on time but suddenly start showing up late daily. This directly conflicts with your personality—that is, the fact that you are conscientious. As a result, coworkers might start to believe something is wrong. On the other hand, if you did not have this characteristic, it might not be as surprising or noteworthy. Likewise, if your normally even-tempered supervisor yells at you for something minor, you may believe there is something more to his or her anger since this isn’t a normal personality TRAIT and also may have a more difficult time handling the situation since you didn’t expect it. When we come to expect someone to act a certain way, we learn to interact with them based on their personality. This goes both ways, and people learn to interact with us based on our personality. When we behave different than our normal personality traits, people may take time to adjust to the situation.

Personality also affects our ability to interact with others, which can impact our career success. In a 2009 studyAngelina R. Sutin and Paul T. Costa, “Personality and Career Success,” EUROPEAN Journal of Personality 23, no. 2 (March 2009): 71–84. by Angelina Sutin et al., it was found that the personality characteristic of neuroticism (a tendency to experience negative emotional states) had more effect than any personality characteristic on determining future career success. In other words, those with positive and hopeful personalities tend to be rewarded through career success later in life.

Although there is debate between whether or not our personalities are INHERENT when we are born (nature) versus the way we grew up (nurture), most researchers agree that personality is usually a result of both nature and our environmental/education experiences. For example, you have probably heard someone say, “She acts just like her mother.” She likely behaves that way because she was born with some of her mother’s traits, as well as because she learned some of the behaviors her mother passed to her while growing up.