Jon Katzenbach has delivered some great advice over the years for those considering culture change efforts in any organization. In the summer of 2012, he co-authored an article that still has great insights—two of which have proven out in our culture work at Arnowitz Culture Agency. First, focus on a few critical shifts in behavior. Secondly, honor the strengths of your existing culture. His HBR article is an excellent introduction to what makes a culture change ‘stick’.