This inspiration and ideas behind SaveYourDay has been heavily influenced by Getting Things Done (GTD). David Allen, the original thinker behind GTD, has to-do lists as starting point to be able to work quickly and efficiently.
The purpose of GTD is simple: to get more done and to reduce stress at the same time. It may sound like a paradox, but using an external system instead of having all loose ends in your head, makes it a lot easier to relax and be present.
David Allen wrote a classic in the genre of personal effectiveness, “Getting Things Done – The Art of Stress-Free Productivity” (2001). The book is relatively wordy for being a book about efficiency, but if you are interested in a comprehensive review of the methodology, it is well worth reading.