The Ignored Sickness: An Unpredictable State of Mind

What is the underlying cause of the way that some people suddenly become infuriated or emotional and start weeping or behave in some unexpected way in the face of day-to-day events? Why is it essential to avoid falling prey to this disorder, which mainly damages the victim himself and is generally described as someone “having a hair trigger?” What must be done to free oneself from the condition?