Answer: autosuggestion

AnswerCrossword Clue
AUTOSUGGESTION"You might want to check the carburetor," e.g.
autosuggestionThe hypnotic or subconscious adoption of an idea that one has originated oneself, e.g. through repetition of verbal statements to oneself in order to change behavior
autosuggestionan influencing of one's own attitudes, behavior, or physical condition by mental processes other than conscious thought