In 2008, he co-founded Kotter International with two others, where he currently serves as Chairman. The business consultancy firm applies Kotter's research on leadership, strategy execution, transformation, and any form of large-scale change.
Kotter, John P. (2014). Accelerate: Building Strategic Agility for a Faster-Moving World. p. 224. ISBN978-1625271747.
Kotter, John P. (2016). That's Not How We Do It Here!: A Story about How Organizations Rise and Fall--and Can Rise Again. p. 176. ISBN978-0399563942.
In Leading Change (1996), and subsequently in The Heart of Change (2002), Kotter describes an eight stage model of successful change in which he seeks to support managers to lead change and to understand how people accept, engage with and maintain successful organisational change.