Why is it easy to walk along a school corridor without bumping into the walls, but it would seem really tricky walking along a cliff ledge, which was the same which was the same width?

Fear is difficult to overcome. You are constantly thinking about what could happen or what will happen, that it doesn't matter the width of a cliff ledge or school corridor; it will always be easier to walk a school corridor. Ask yourself this: Would I rather walk on the edge of a cliff, where I could fall, or along a school corridor, where I could bump into walls? The answer should be simple. A school corridor, no der. Now ask yourself why. I would say, "Well, bumping into a wall is a lot better than falling off a cliff!"

Because of your fear that you just might fall off the cliff makes it a lot harder to walk along a cliff ledge than a school corridor, no matter the width.

Thought its all the feel and thought and fear of falling down the fear center of our brain cautioning us there protential danger near by