Pragmatic? I'm not sure how kicking a dead horse over and over and over is pragmatic; its still dead.
Maybe I'm channeling the positive Z attitude but to me if I'm sitting in a big pile I could either focus on the pile or more optimistically focus on the lovely flower that pile is helping to fertilize and grow.
Monty Python said it another way - "always look on the bright side of life":
All you negative nellies are free to keep harping on things that have passed and I hope it doesn't continue to eat you up inside. I'll choose to focus on better things that may still come to be.