If, while in the presence of 'Real Thought' there is an absence of fear, then if there is fear present in the story of your life, you are in a state of uncertainty. There are ways to regain certainty which we'll look at tomorrow.
So again, where there is fear there is uncertainty – an absence of knowing where one can only ‘guess’ what to do.
This leads you to doubt your ability to choose due to the ‘evidence’ of the story unfolding, and tends to keep you unwilling to believe in something else.