The notion that failure is as good, or better, than success in providing new data from which we can learn useful things, is completely alien to some people, particularly in the hyper-competitive miasma that is American life, particularly business life.

Brene Brown has a tendency to couch everything in terms of feeling, so I'd modify her thought to say we need "badasses willing to dare, fail, admit failure, assess the lessons learned from it, refine their approach, and try again". Working through whatever emotions are present during that process is part of the honest bit where you admit failure, and should not be neglected, but I think the notion that you're not "being real" unless you get all choked up in mixed company, is a little bit overdetermined.