The amygdala connects strongly to brain circuitry for both focusing our attention and for intense emotional reactions. This dual role explains why, when we are in the grip of anxiety, we are also very distracted, especially by whatever is making us anxious. As the brain’s radar for threat, the amygdala rivets our attention on what it finds troubling. So when something worries or upsets us, our mind wanders over and over to that thing, even to the point of fixation—like
