Based on all of the research compiled on the subject of Creativity, the most important personal characteristic is Openness!
A truly creative person is willing to experience nearly anything as long as they percieve it to be worthwhile, in the context that it will add to their understanding, and increase the accuracy of their worldview. Ambiguity and fear of experiences, does not inhibit a creative individual from the experience, like it might with a less creative individual.
Creativity was commonly thought to be fostered by a supportive, nurturing, trustworthy environment conducive to self-actualization.
However, research shows that creativity is actually associated with childhood adversity, which forces a person to face their fears.
By being more open to challenges, than submitting to our fears, we develop our creativity while dispelling our fears.