Yesterday, I bought and read a PDF version of Zen To Done. Zen To Done (ZTD) is a simplified version of Getting Things Done (GTD). The author of the book, Leo Babauta wrote:

I have made many habit changes: I quit smoking, started running, started eating healthier, completed a marathon, doubled my income and got my finances in order, become a vegan, ...

Fitter, happier, more productive / Comfortable / Not drinking too much ...

However, ZTD itself is not so bad. I will try the simplest version that named "Minimal ZTD" in November and December. This version have only four habits: Collect, Process, Plan and Do. In this month, I will focus to get into two habits: Collect and Plan.