Answer:
Narcissistic personality disorder; Personality Disorder.
Explanation:
Narcissistic personality disorder is a type of personality disorder in which a person <u>needs admiration</u> and <u>lacks empathy for others</u>. A person with such type of personality disorder is <u>arrogant, proud, demanding and even at times manipulative.</u>
Such type of people <u>leads an unhappy life</u> when they are not recognized or given attention that they need. This also <u>affects their relationship</u> with others in office, schools, or home. They also <u>can not take criticism</u> because they think that they only deserve appreciation. They are <u>envious of others</u>.
In the given case, Zachary is <u>unable to take criticism</u> and is <u>envious of others' success</u>. He is a <u>daydreamer</u>. The characteristics that he shows is of "narcissistic personality disorder".