The Dalai Lama gives advice on character creation:
It is not just a person’s physical constitution, their intelligence, their education, or even their social conditioning that enables them to withstand hardship. Much more significant is their inner development. And while some may be able to survive through sheer willpower, the ones who suffer the least are those who have a high degree of patience and courage in the face of adversity.
Constitution and Intelligence sounds like D&D, but he mentions Willpower, which is Warhammer, right?