Insomnia Consulting Still searching for an interesting slogan

After reading this article in Harvard Business Review (http://hbr.org/2010/01/success-gets-into-your-head-and-changes-it/ar/1) and this one in Wired (http://www.wired.com/magazine/2009/12/fail_accept_defeat/all/1) I was once again reminded of all the smart people who have advocated doing retrospectives to improve team performance.
This blog by Ty Kiisel sums it up nicely  http://blogs.attask.com/blog/strategic-project-management/0/0/the-projec....
I've done restrospectives with some teams.  One of the biggest difficulties I've had is getting people to admit they have to improve.  Perhaps that's just ego and perhaps it's a symptom of the brain's unwillingness to pay attention to failure.