Alan Lakein, the well-known author on personal time management is credited with several key ideas and questions, including, "What is the best use of my time right now?" and "Time = Life, Therefore, waste your time and waste your life, or master your time and master your life." 

Lakein has many fans, including Bill Clinton, who find has tips and questions in key areas of managing time invaluable. He focuses on several key areas:

1. Count all time as “On-time” and try to get satisfaction (not necessarily accomplishment) out of every minute.
2. Continually examine old ‘time management habits’ for elimination or streamlining.
3. Set yourself lifetime goals. Plan first thing in the morning and set priorities for the day.
4. Work smarter rather than harder.
5. If you seem to be procrastinating, ask yourself: “What am I avoiding?” – and then try to confront that thing head on.
6. Relax and ‘do nothing’ rather frequently’.

For more details, see the comprehensive checklist on ‘What is the best use of your time right now?’ which brings together his tips on “How he saves time” from his book ‘How to Get Control of Your Time and Your Life’.