Personal traits are by definition intrinsic in nature. They enable the personal development of an individual and are also enablers for certain behaviors.
Willingness to expand mental models
According to Wikipedia:
"A mental model is an explanation of someone's thought process about how something works in the real world. It is a representation of the surrounding world, the relationships between its various parts and a person's intuitive perception about his or her own acts and their consequences." [v]
Essentially, a mental model is an individual's perception of reality and how something works in that reality. A mental model represents one way of approaching a situation and is a form of deeply-held belief. The critical point is that ...