willpower

According to cold, hard science, willpower is an unlimited resource.

Stress is the enemy of willpower, so say the latest findings of neuroscientists, psychologists, and life coaches in the field.

Like any other muscle, the more you exercise your willpower, the stronger it becomes.

His brother Laurence—wasted—all through women—atrophy of willpower!

But he, like his indomitable master, possessed a great fund of energy and willpower.

The willpower is firm, and is combined with enterprise and perseverance.

And the next day he had to use all his willpower to avoid seeing the scarred thumb.

Gervaise, lulled by the excessive heat, felt so limp that she couldn't even summon the willpower to change the subject.