Change does not fail to occur because of insincerity. The heart patient is not insincere about his wish to keep living, even as he reaches for another cigarette. Change fails to occur because we mean both things. It fails to occur because we are a living contradiction.

Immunity to Change: How to Overcome It and Unlock the Potential in Yourself and Your Organization (ed. Harvard Business Press, 2009) - ISBN: 9781422129470