Time

Our most precious commodity is time. Far more precious than gold. Once it's gone, you can never get it back. If you lost your job, you can always get another job. If you lose money in bad investment, you can always make more money. But you can never get back the time you have lost or misspent! Once it's gone, it's gone forever and never come back. When you are old, what are the most to regret - not being able to buy or owned big house or expensive car or not being able to spend more time with your kids when they were young? Think....!