From the movie Ghost Dog, something-something Bushido:
In the words of the ancients, one should make his decisions within the space of seven breaths. If discrimination is long, it will spoil. When matters are done leisurely, seven out of ten will turn out badly. A warrior is a person who does things quickly.
When your mind is going hither and thither, discrimination will never be brought to a conclusion. With an intense, fresh and undelaying spirit, one will make his judgments within the space of seven breaths. It is a matter of being determined and having the spirit to break right through to the other side.