This article offers guidance on how to help a person on your team who is struggling with the interpersonal aspects of leadership. Former NSP Partner Heather Corcoran interviews one of Google’s executive coaches on selecting the coach that will allow for the best outcome. Immunity to Change is the most effective process we know to address someone’s internal barriers to self-improvement. It makes a difference quickly. Success in any coaching engagement depends on two things: the capacity of an executive to influence the system and the potential for that system to be influenced.