Answer:
Self-fulfilling prophesy
Explanation:
Self-fulfilling prophesy is the phenomena in which a person holds a view or thought about the future that he holds is called a self-fulfilling prophecy. These phenomena occur with every person in every culture and art. This is the concept of giving affirmation to the negative belief and to ignore the positive beliefs.
The placebo effect is the best example of self prophecy in psychology. This concept was given by Robert Merton. Robert Merton was a social psychologist. He defines that prophecy is the false definition that provokes a new behavior. This behavior originates an original false perception as a misconception that comes true.