A Brazilian entrepreneur, that is. First and foremost, entrepreneurship is predicted by family characteristics, most of all having other entrepreneurs in the family and coming from a large family. What predicts finding a successful entrepreneur?: "the individual’s smartness and higher education in the family." Entrepreneurs are not more self-confident than non-entrepreneurs and overconfidence is a big danger. Social networks predict who becomes an entrepreneur but not who becomes a successful entrepreneur. Entrepreneurs in Brazil exhibit more trust but this result does not seem to generalize across countries.
Here is the paper, from the World Bank. I thank Russ Roberts for the pointer.