Lately I've needed it for doing taxes (read "finding every last receipt!"), chatting with the school principal (read "complaining"), walking/riding for an hour of aerobic activity (read "my knees are burning!"), confronting someone (read "I hate confrontation!"), diligently continuing a study I've committed to (read "I'd rather take a nap!") and overcoming a little rejection (read "I'm such a baby!").
Strength. Glad it's written on my right hand. (Read "Well, it's written on my ring on my right hand!")