Pema Chodron writes in Practicing Peace in Times of War,

This is a familiar scenario in our homes, in our workplaces, in our communities, even when we’re just driving our cars. We’re just driving along and someone cuts in front of us and then what? Well, we don’t like it, so we roll down the window and scream at them.

War begins when we harden our hearts, and we harden them easily—in minor ways and then in quite serious, major ways, such as hatred and prejudice—whenever we feel uncomfortable. It’s so sad, really, because our motivation in hardening our hearts is to find some kind of ease, some kind of freedom from the distress that we’re feeling.