What are you afraid of? Dying in a plane crash or catching an incurable disease? Getting eaten by a shark? Fear can override rational thought. Before the neocortex can even process the threat, the amygdala kicks i, and now you're in fight or flight mode. But the same neurological programming can also spook us, cause us to act irrationally when in reality there's nothing to worry about, so... can we override our most primal instinct? Condition ourselves not to react out of fear.