
Just as important was the ability to stay calm and focused even under tremendous pressure. A warrior could possess amazing physical skills, but crumble the first time they face an opponent with a three foot sword that is as sharp as a razor, where just one mistake meant certain death. So, in addition to physical skills, the Samurai trained to develop their minds and control their “spirit” or emotions to have the best chance of survival on the battlefield. This included three important principles of mental and emotional development known as Mushin, Zanshin, and Fudoshin.
Mushin means clear or “empty” mind. This is not to be confused with an absent mind.