Immunity to change is a tool created by the Harvard University Professors Robert Kegan and Lisa Lahey. The tool is presented as a framework that helps us understand why sometimes is so difficult to introduce a change in our personal or professional life. Although I will be referring to this tool on the personal development context, it can be also applied on organizational settings.

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Sometimes, when we want to introduce a significant change in the way we behave, we find that it is easier to say than to do, and eventually, we give up. Our rationale will find a logic explanation to justify our failure. However, what we do not know is that, inside us, there are unconscious forces working against the change we want to implement.

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The same as our body, our brain has its own immune psychological system rejecting any new behavioral attitude trying to defy the current unconscious rational.

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