Positive illusion refers to the protection of self-esteem by using idealized self, unrealistic optimism or exaggerated perception of controllability as a buffer when the self threatens self-esteem due to negative information. Based on the above definition, Which of the following options are positive illusions:. ['A boy fails to pursue a girl, thinking that the other party is afraid to agree because of shyness.', 'Many people find the examination time very tight, but Kobayashi still feels that there is enough time.', 'Someone is worried that the manager has a bad impression of himself and goes to the office early every day.', 'A male graduate student has repeatedly failed, but he firmly believes that heavenly rewards have been successful.']