Time is the most fair yet the most ruthless thing. It moves forward regardless of whether you are happy or not. When you are young, you often feel that days are long and it doesn't matter; it is only when you reach middle age that you realize it is like sand slipping through your fingers—the tighter you try to grasp it, the faster it leaks away. Don't always say 'wait until later'; if there are things you want to do, do them now; if there are people you want to see, see them now. Regret cannot be bought, and missing out means a lifetime of loss. Spend your time on people and things that matter, and don’t waste it on worthless people and things; this is the greatest respect for life. After all, where you spend your time is where your life is.