Alan Lakein

Alan Lakein was an American author on personal time management, including How to Get Control of Your Time and Your Life which has sold over 3 million copies.
Lakein graduated from Johns Hopkins University and Harvard Business School and resided in Santa Cruz, California.
Lakein is credited for several quotes, including "Time = Life, Therefore, waste your time and waste your life, or master your time and master your life." He is credited as the creator of Lakein's question: "What is the best use of my time right now?". He has also made management films and training films.
Former U.S. President Bill Clinton started his autobiography, "My Life", with a reference to the book:

Books

Alan Lakein, How to Get Control of Your Time and Your Life
Alan Lakein, Give Me a Moment and I'll Change Your Life: Tools for Moment Management
''It's About Time & It's About Time''