We become just by performing just acts and brave by performing brave acts.
Virtue is a stable "state" of character that allows a person to choose the right action consistently. Aristotle's Nicomachean Ethics
The Path to Eudaimonia: Virtue and the Golden Mean in Aristotle’s Ethics The Ultimate End: Happiness as Flourishing We become just by performing just acts and
To be morally responsible, a person must act voluntarily and be aware of what they are doing. The Doctrine of the Golden Mean it is a developed through practice.
Virtue is not something we are born with; it is a developed through practice.