Although we use judgment to think about problems, it is will, not intellect, that ultimately solves the problem - Waller

Nothing is difficult in the world, only those who are determined. A person who is determined means that his determination is firm. If his ambition is firm, he will not be afraid of failure. ——Ren Bishi

Willpower is a concept in psychology. It refers to the quality of a person who consciously determines his purpose, controls and regulates his actions according to the purpose, and overcomes various difficulties to achieve his purpose.

Kelly McGonigal mentioned in the book "Self-Control": The so-called willpower is the ability to control one's attention, emotions and desires.