Most of the people and teams who ask me to work with them have already tried to change - their will to change is not the problem. What they have realised that making and sustaining change is not as easy as they had thought.
The reason why significant change difficult is that we all - individuals, teams, organisations and societies - have interpsychic and intrapsychic processes which actively operate to keep us behaving in consistent and predictable ways - and to not change. To add to the challenge, we then hide these processes from ourselves so that we are unaware that they are operating! We hide from ourselves what we actually do (therories in use) by believing that we do things in other ways (espoused theories), we have an approach to learning (Model 1) which ensures we don't see opportuntities to change, and we have hidden rules that govern how we see, think, and act. There are good evolutionary reasons for this, but in these fast-moving, complex times we need to change more quickly and dramatically than we have ever had to before, and so we have to be able to transcend these hidden dynamics.
(Find out more about some of these hidden processes: Competing Commitments, From Know-How to Do-How, Core Qualities, The Ideal Self, Desire and Addiction, The ABC Model, Managing Progression and Regression, and Shifting Stuck Behaviours.)