As humans, our brains are hard-wired to avoid discomfort.

The fear part of our brain is the dominant driver in that goal. It acts to keep us safe by eliminating possibility and uncertainty as it equates them with threats to our safety.

When faced with ambiguity, our brain works quickly to assess the likelihood of a negative outcome. And fear, being the conservative that it is, never plays a game of risk.

If there is any possibility of a negative result, we feel an immediate pressure to withdraw or hide.

"Go back - it's not worth it," our fear calls to us.