When at the ledge and blinded by fog, we have 3 choices, as I see it. 1) Use senses other than sight to better define what surrounds us, 2) cut through the fog, or 3) wait to be rescued.
The first 2 give us back a sense of control. The 3rd leaves us helpless and at the mercy (or apparent mercy) of others.
With pain, we can learn to feel our way toward edges until it becomes clear that we are not actually on a ledge. Or, we can lift the fog.
More on the fog in the next post.