If you were looking for some boost of motivation, I could tell you to treat today as if it was your last day on Earth. You would only work on the things that matter to you, and you would do them with focus.
The problem is, you would only have about 10-12 hours before the story revealed itself to be false, and the likelihood that you are going to die tomorrow is very slim.
On the other hand, if you read the obituary section, you will get a glimpse of a typical life span, and what you are able to work with in those years. Plan accordingly.