willpower

Refers to having a great capacity for self-control.

Used to emphasize the great strength of will required to do something difficult.

Indicates that the entire extent of a person's self-control is required.

Indicates that an achievement was made possible solely through the use of self-control.

To possess the quality of self-control.

Indicates that an action requires a significant amount of self-control to perform.

To make a conscious effort to find and use one's internal strength or self-control.