Many people have a natural, physiological reaction to heights. I ask myself, is the activity legitimately dangerous? What are the risks? How can I mitigate them? Is the mitigated risk acceptable? Fear is the signal that starts analysis. It can trigger intense focus. But I don't want it to be the deciding factor.
I saw an interview with Alex Honnold (first person to free solo El Capitan) and when asked if he was afraid he said something like in free climbing there's no room for fear.
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