“With great power comes great responsibilities” Uncle Ben told Peter. Peter was given great power and became Spiderman, but with the same logic that by laughing you can become happy I think it works the other way around as well.
Laughter triggers the release of endorphins, the body's natural feel-good chemicals. And by forcing yourself to a laugh can then make you feel happier, and I believe the same goes for power and responsibility. Give someone responsibility and they will show great power.
Do I then mean you can take anyone off the streets and make them CEO of any company? No, but if you pack their bags with the right set of equipment and send them off on a challenging journey they will provide more than you can imagine.
I strongly believe that people do their best with the resources they got and if you as a leader can provide meaning in what people do and make sure they have all information and knowledge they need, KPIs as productivity can be used as an indicator on your work.