Moving forward by "narrowing your field of vision."

I've heard people say we should "broaden our perspective" to overcome difficulties, but
this was the first time I'd heard that "narrowing your field of vision" can help you move forward.

This is a story from cave explorer Katsuji Yoshida.

He said that in the process of aiming for places where no human has ever set foot, he often fell into the feeling that he "might die." In a place that is pitch black, narrow, where you can't go forward or backward, and can't even breathe properly, the worst thing you can do is panic.

What if this happens, I might die.
Maybe I won't be able to return to the surface.

When your mind is filled with negative thoughts, your body becomes even less able to move.

In such situations, he focuses on just one thing: "I will clear this, and nothing else."
If a rope is snagged, he focuses only on untangling it. He concentrates his field of vision solely on the rope. He says that once you clear one thing, your state of mind changes completely.
He even goes as far as
closing his eyes for a momentand trying to do it by feel. I learned that one's field of vision has a major impact on one's mental state.

And, the more anxious you are, the more you should "work slowly."Follow your usual procedures, one step at a time.

He realized that doing this makes it harder to get tense.

I will probably never enter a cave in my life, but
I feel there will be times when I can't take a single step forward due to the anxiety of not being able to see what lies ahead.



As a hint for such times,

I decided to keep this realization in my heart.