Entrepreneurship seems to be the trending topic and we constantly hear in the medias about success stories of famous people such as Mark Zuckerberg, Jeff Bezos or Bill Gates, among many others. But do we really know what is an entrepreneur? It seems that opinions on the subject are as many as the reasons that make an entrepreneur successful. The word "entrepreneurship" comes from the French verb "entreprendre" which means "to undertake". Therefore, we have to study further those key actors of the economy.