Your self-discipline and ability to make up your mind in the face of adversity. Used mostly to resist mental powers and social interaction Stunts.
Willpower is the main defence against Influence and other mental powers.
Finally, Willpower decides your drive; sometimes a Willpower check might help overcome depression or adversity, and you can generally work a number of hours each day equal to the sum of your Willpower and Constitution.
Attribute Schticks
These are the Schticks related to this skill. Check with your GM which of them are applicable for this game.