1) The passage discusses managing anger and irritability, referring to one's "Irritability Quotient".
2) It states that having a high IQ can put one at a disadvantage as it leads to overreacting to frustrations with resentment.
3) Several techniques are presented for releasing anger in a constructive way, such as verbalizing what you're feeling, recognizing that others cannot make you feel angry without your permission, challenging angry thoughts, using affirmations and exercise to promote calmness.