Answer: dalecarnegie

AnswerCrossword Clue
DALECARNEGIEDriving self-improvement author?
DALECARNEGIESelf-help author
DALECARNEGIE"Believe that you will succeed, and you will" speaker
DALECARNEGIE"How to Win Friends and Influence People" writer
DALECARNEGIE'How to Win Friends and Influence People' author
DALECARNEGIEAuthor of the work
DALECARNEGIESelf-improvement guru