“I only want to teach people who are going to stab someone or get stabbed.”Whiskey in one hand, my friend was only half-joking. He teaches martial arts, including knife fighting. He was mocking the fact that students come to him, including police officers and members of the military who need the skills for their work, although few are willing to get cut.You may not want to learn knife fighting, but the fear of getting cut is real in much more mundane pursuits:You want to learn a language, but you don’t want to make mistakes speaking.You want to give speeches, but you don’t want to bomb your presentation.You want to write a novel, but you don’t want anyone to laugh at your work.You want to be a surgeon, but you don’t want anyone to die on the operating table.Nobody wants to get cut. Failure, injury, pain, rejection, and death, are all things we instinctively avoid.At th
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