It's very important to manage your time in your daily life. The most important advice - never put off till tomorrow what you can do today. That's the basis of everything.
I have read that there are many people who share the quotations from the book here and do not share the personal motivations. In my opinion personal motivation is much more important than the other quotations because if I can do it, it means everyone can do it. Another thing is that the management of the time is very difficult thing and not an easy one, just remember one thing that if you are tired of doing something, then it means you are inviting the time difference for yourself.