It is, I think, I hope, it would seem, a way of teaching, no , coaching, one's self in the practice of not looking back.
That's not to say that you should ever stop caring but, with the best possible intentions, when things go wrong, or seem to be going wrong, " fuck it " basically. You can't change what has gone before. Move on.
I can't/couldn't ever see myself adopting such a strategy for living but if it could influence my thinking in some small way it might not be such a bad thing.
The trouble with me is that I think too much. I can't simply live in, and enjoy, " the here and now ". I allow myself to be haunted by the past and feel threatened by the future. The words " rock and hard place and immovable object " readily spring to mind. Too readily unfortunately. So what's a bloke to do?
Giving the matter some thought.