Stress is often a major factor in snapping. The threshold for pulling all nine of the LIFEMORTS triggers is lowered when you’re under stress. So if you’re held up in traffic and suddenly enraged—ask yourself why am I angry? Anger is an emotion preparing you to fight. It comes when the threat detection mechanism in your brain says, “I detect this threat.” When that happens, identify the trigger.
Source: Your Brain Is Hardwired to Snap