Most people can easily remember a time that they were genuinely afraid. In November 2008, in a city called Netanya, on a boardwalk adjacent to the Mediterranean Sea, I was paralyzed with fear in the grips of a stranger. Since then, every time a situation occurs, I feel my heart in my throat, my fingers tingling, and an aneurysm-like pounding in my head. My mind replays that particular memory and the physical experience of that encounter and views every fearful situation as if to the same degree. The first pl[...]