Along with extrinsic factors, intrinsic factors are important. Individual personality plays a large part in many cases. It is believed that the employees with a positive outlook on life and full of optimism are more likely to achieve higher job satisfaction irrespective of the job or workplace they are in. When optimism allows individuals to function well in the fact of adversity and prevents them from becoming depressed, pessimism makes them less likely to complete tasks and meet objectives successfully, thereby undermining job satisfaction.