What does it mean to cultivate the mind?

To cultivate one's mind is to sharpen one's spiritual will.

Willpower is a concept in psychology. It refers to the quality that a person consciously determines the purpose, controls and adjusts his behavior according to the purpose, overcomes all kinds of difficulties, and thus realizes the purpose.

note:

Royce said: "In a sense, willpower usually refers to all our spiritual life, and it is this spiritual life that guides all aspects of our behavior."

When people are good at using this beneficial power, they will have determination. And a person's determination means that willpower is at work. The psychological function of people or the obedience of body organs to determination just shows the great power of willpower.