Purpose: The current study examines the relationship between leadership styles and personal belief of leaders. There is lack of researches conducted to study the personal belief construct in relation to the leadership styles of leaders in various organisations, to examine the role of belief system in understanding the relative role of it in organisations performance enhancement it is necessary to study the relationship existing among them. Sample: The Research is conducted in the service sector organisation; for the purpose of research the Life insurance Corporation the semi Government Corporation is taken. The sample size for the study is 70 employees, selected randomly, out of which 62 valid responses were taken for study. The study is conducted in the Tricity branches and the divisional office of insurance companies in Chandigarh, one among the top most prominent Union territories of India. Variables: The key variables under study are personal belief and leadership styles. The four dimensions of leadership style are taken into consideration (Autocratic, Democratic, paternalistic, Laissez-faire Leadership styles) to examine the impact of personal beliefs on leadership styles. Methodology: The data is being analyzed by using the SPSS technique to test the relationship and impact among the variables by using correlation, linear regression, T-Test, Independent T-Test and using ANOVA. Findings: The study revealed that the leadership styles; Autocratic, Democratic, paternalistic, Laissez-faire Leadership styles are positively impacted by the personal belief of leaders except for paternal leadership style. The T-test and Independent T-Test and ANOVA will show that the personal belief of leaders is not differentiating on the basis of age, sex, income and marital status.