This article describes a study of relationships between a selected set of personality characteristics, as measured by the 16PF, and the success outcomes of a group of 109 dentists. Results indicate that Factor C (high ego strength), Factor F (liveliness and enthusiasm), Factor H (venturesomeness), Factor Q1 (experimenting), Factor Q3 (high self-concept integration), Factor Q4 (tenseness), Factor QII (anxiety) are significantly related to one or more index of success (satisfaction, size of practice, income and professional advancement). Findings are compared to results of earlier research concerning relationships between personality and stress related illness. Implications of findings are discussed in terms of the influence of personality on individuals' capacity to cope with occupational stress.