The concept on planning is to get yourself into reading. Yes reading fun books may keep you engrossed for long periods. But what about really informative book you need. You just need to kind of condition yourself to it till you begin to enjoy the information you get out of such book. Reading for like 2 or 3 hours is good to start with or even an hour till you begin to increase the length of time. And one way or another we always get to a point where we distribute time to do what we want, like, or need to do. If one is a career person, you have to make certain plans to ensure you do what you like to do and sometimes people begin to lose interest in what they haven't done in a long time. So surely including reading a book for an hour or 30 minutes help to keep your interest going.
You are lucky to have time to read for long hours and I envy you. But not everyone has that luxury and most of the points are what kept my interest going till now while juggling different stuff together.
Thanks for your response and I would like to see more of your comments under my posts to ensure more people understand my view and also understand your view.