a nice and short summary of habit three!

Habit 3: Put First Things FirstPrinciples of Personal Management
Most things that we do each day can be divided up in two different ways: they’re either urgent or not urgent, and they’re either important or not important. Obviously, in our lives, we wish for the things we do to be important, but we’d also like for them not to be urgent, because urgent things cause stress. So, ideally, an effective person focuses on things that are important but not urgent.
Covey goes a long way with this central idea here, pointing out that we should strive to do this in all aspects of our life, no matter which hat we’re wearing at the moment: worker, parent, spouse, volunteer, and so on. Then, within each of those roles, one should define specific goals that they wish to accomplish, important short term ones. For example, in my role as a parent, I might have a goal of taking my son to the park this week for two hours.
Once you’ve defined a couple of goals for the upcoming week for each of your roles, literally schedule them in. Add these things to your schedule and don’t let anything interfere with them. Because these items are not urgent, you have some flexibility on when to do them, but because they’re important, you must schedule them and keep it on the schedule.