For example, I want to take pills everyday at specific time until I finish reading it. Do I need to write this down on my trusted system? If yes, is it belong to next action list or calender? (BTW, I'm a person definitely to forget to take pills without someone tell me to)
It is defined that Calendar is used as reminders of actions that have to happen on a specific day or time. In fact taking reading that book is not "have to do everyday".
Is there any relative paragraph in Get Things Done book because I don't finish reading it yet.