dear, as I can figure out your main problem is talking to yourself despite of having an insight of it being not normal. it well could be a part of neurotic condition called an obsessive compulsive disorder , in which a person has an intense urge to think or act repeatedly. Despite the patient is having whole knowledge that the thoughts or acts that he commits to are inappropriate and he is not able to control them even with multiple attempts to stop these. It is often associated with intense anxiety if one avoids to do it. does the above description matches with the complain you have? if yes, or if it has made your occupational and social functioning difficult, I strongly advice you to see a local psychiatrist. hope to have helped you with your problem. thank you. stay healthy