We have this life on this earth, may last a day, may last 115 years, but this is the life. What we do not get are “do-overs” in the sense that yesterday was and yesterday will not be again. This is not to say we can’t have a conversation about yesterday, or even where we were or where we were not before we came to this life – only that we cannot change our past.
What we do control is the next few minutes, hours, days, weeks, and however much time we are granted in this life. In many respects it is the what’s next, the tomorrow’s, the application of lessons learned that frames our future and the invitation to mindfully ponder that future and work to make evermore wise decisions about our time and activities is at the core of Christensen’s book.
I think it instructive that the book provides a guide for moving forward, improving upon our individual condition through improving choices built upon improving results.