Often when I have looked at employees and their levels of success in life, at work, etc., I have found a direct correlation between their success and how dedicated they are to guarding their time like a lion a steak. There are only two things in life that are irreplaceable: time and your health. EVERYTHING else in your life can be replaced.
Read this article. It is right on and is from the legendary Harvey Mackay. Click here: http://harveymackayuniversity.com/85-minuterealworldmba/time-management