This study empirically verifies the determinants of emotional regulation as observed among marketing staff in the Jordanian banking sector. In particular, it examines the relationship between participants’ cognitive flexibility capabilities, their levels of response inhibition and their levels of mindfulness on the degree of emotional regulation they exhibited. Data was collected from a sample of 120 respondents who were administered four standardized survey questionnaires. Multiple linear regression was used to analyze the data, and results show no significant relationship between cognitive flexibility, inhibition levels, and a combination of both factors on emotional regulation. However, it found that mindfulness had a low but significant and positive relationship with emotional regulation.