Too often we focus on the things that go wrong, and not on the things that go right. Lets face it; everyday things will go wrong. Have you ever watched a professional ball team play an entire game without mistakes being made. A football game where there were no dropped balls?
It's more important to focus on the wins, not the losses. I am not suggesting we ignore the mistakes. But if we never recognize what goes right, and only on what goes wrong, we will end up creating a shop culture of negativity. And that will take its toll on production and lost income.
Recognize what goes right, understand that mistakes will happen. Use mistakes as a means to improve, not punish. Do this and watch production improve.