JD Roman (1959-), -with psychologist co-author Manuel Ferrandez- specialist in personal skills development, is the sole known author in the world to indifferently write and publish in English, French and Spanish. When you work for international companies, being able to use different languages is an unavoidable requisite. Most writers only command one language (usually English) but in multicultural environments this is not sufficient.
MBA and PHD teacher at Loyola Leadership School (Society of Jesus) amongst others. His usual customers are companies like Dell, Mercedes-Benz, Boeing, AVIS, Airbus, etc ...
Less publicly known than some of his peers (e.g. Stephen Covey,..), his works are nevertheless used in many companies and Universities around the world. However he tries to make his books easy to read and understand to everybody, so people can put into practice the skills he writes about.
He is also the co-founder of mastercoachs.org (sic), the most exclusive coaching certification organization in the world.