one's own sinful behaviour (delusional conviction)
pathological belief that one has sinned
<psychiatry> Rarely used term for the obsessive belief of having committed an unpardonable offense. ... Origin: G. Enosis, a quaking, + mania, insanity ... (05 Mar 2000) ... 
enosimania Obsessional belief of the patient that he/she has committed an unpardonable sin.