The era of continuous improvement is dead.
First, it's impossible to improve continuously. As any runner knows, you can't PR every race. Real growth requires pushing boundaries, and that pursuit often ends in failure.
"The more you hardwire a company on total quality management, [the more] it is going to hurt breakthrough innovation. The mindset that is needed, the capabilities that are needed, the metrics that are needed, the whole culture that is needed for discontinuous innovation, are fundamentally different." --Vijay Govindarajan in Forbes
Second, there is virtue to doing less.
"There are a lot of areas in life where you really can't succeed unless you're not trying. So, like with people constantly focusing on happiness, there are obvious microcosms where you see this. If you have insomnia, and you're trying to fall asleep, the more you try to fall asleep, the harder it is. If you're in a social situation and you know you should be relaxed and confident, but you're not feeling that way, thinking about it more and trying harder is actually going to be counterproductive." --Edward Slingerland in The Atlantic