What is the best way to reduce irritability?

Re-group. Occasional irritability is a common experience for people. It is an unpleasant state that suggests that a person feels deprived, offended, or unhappy with one's immediate situation. Taking a break, getting a little exercise, or counting the good things in one's life can help. Irritability can be a symptom of various mental disorders. If it persists a mental health evaluation might be in order.