Alan Lakein is a well-known author on personal time management, including How to Get Control of Your Time and Your Life which has sold over 3 million copies. source
It's a complicated process being so bilingual. Sometimes it's a mere word or sentence that comes to me, if I'm writing the book in English, in French. It's not always easy to deal with. Sometimes even during an interview somebody can ask me a question in English that I want to answer in French and vice versa - that's the story of my life!