I think we all underestimate the power of positive psychology to motivate people to work harder/better/more enthusiastically for the organisation. I've seen in coaching how a focus on strengths can really motivate people and help them fly - with consequent ROI for the organisation.
It's not always easy to know how to start - if you'd like to change attitudes, here's a good crib sheet on feeding forward rather than feeding back!
What is feed-forward? It’s a technique where, instead of picking over what’s been done (feedback = the past), you give a person suggestions for the future based on what you believe their skills and strengths to be. Marshall Goldsmith has written a nice piece on 11 reasons to use Feed Forward.