The document discusses how little time humans actually have to live their lives, with statistics showing the average human only lives about 22,000 days. It notes that with so few days, weeks, and Saturday nights, there are likely many books left unread, movies unwatched, places unvisited, and dreams unfulfilled. The key message is that since no one knows when they will die, people should make the most of each day and pursue their dreams as if it could be their last chance.