As Peter Ducker said in his words Entrepreneurship is neither a science nor an art. It is a practice .
I think Entrepreneur will have few qualities since childhood. He always aspire for recognition from friends,teachers and want to be problem solver.Enjoys solving other problems and get recognition. This person will have guts and confidence in him that he can do anything . May be he is not the top ranker in his class but sure he is talented enough to convence people around him at that time he may not know that he is emerging to be an entrepreneur.