And, in our complicated world, there are a host of situations that aren’t objectively dangerous, but can seem or feel dangerous. If your amygdala sets off the alarm in response to a harmless thought, you get a false alarm of danger: the bell clangs, you get an instant whoosh of fear, and it is very easy to think that there is real danger. The result is that thoughts feel dangerous, you try to fight them, and—of course!—they become stuck.

