What Does The Proverb ' Procrastination Is The Thief Of Time' Mean?

The expression that Procrastination is the thief of time mean that by procrastinating we are wasting precious time which can be used productively. Time is what we humans have in limited amounts. Even though, it may not seem like that but the actual time that humans spend on the planet is very limited and it is very unwise of us to squander the little time we have meaninglessly when it can be used to do something better with our abilities and achieve much in our limited time periods. So, procrastination robs us of any opportunities we may find to better ourselves.