Feeling of unceainty and excessive sense of responsibility is seen in:
The cognitive theory of OCD says that the typical abnormalities in OCD include, "excessive or inflated sense of responsibility", "feeling of unceainty" and "overestimation of threat". Few books are giving the answers as "generalized anxiety disorder" which is incorrect.
Generalized anxiety disorder
OCD
Phobia
Personality disorder
Neurotic, Stress Related and Somatoform Disorders