concentration of mind; mental focus
A yojijukugo emphasizing that strong, undivided mental focus can overcome any obstacle. Often used in motivational or self-discipline contexts.
With concentrated effort, anything can be accomplished.
He passed the difficult exam through sheer mental focus.
A proverb with a similar meaning: strong will can move even a rock. 精神一到 is more formal and often used in written or motivational contexts.
From the Chinese maxim 精神一到何事不成, “When the mind is fully concentrated, what cannot be accomplished?”, recorded in the 朱子語類.