Acknowledge your mortality, though, and you will be acutely aware that every day you live represents a withdrawal from a life bank that has a finite number of days in it. In most circumstances, you don’t know what that number is. It might be as low as 1, meaning that this is your last day alive, but it might also be 25,500, meaning that you have seventy years more to live. Since you have a finite number of days left to you, they are precious, and it would be foolish to waste them.

