When you plan your time you are making wise investment of a very limited resource – time. Knowing what to work on, when and how much time you have to finish the work makes you more focused. That focus on the work ensures that you get more quality work out.
We all need some free time to relax and unwind but, unfortunately, many of us don't get much free time because we're too busy trying to keep up with our daily activities and work load. By implementing time management skills, you are able to get more done in a shorter period of time leading to more free time.