There are an infinite number of books and articles on time management. Which method you choose is a matter of your personality, energy and industry.
Regardless, the concept of Zero Level is crucial to any entrepreneur. Every single day there are certain things that are non-optional in your business. This is your Zero Level. Once you nail your Zero Level, other action items for the week more naturally fall into place.
Read more at http://deborahtutnauer.com/entrepreneur-success-coach/zero-level/