a day in my life
The effective change leader must force themselves to look for the likely results of interventions. The trap is to focus of what they want. Life has this interesting characteristic of causal chains. Responsibility demands that you understand the likely causal chain as much as possible. The human tendency perhaps is to focus on the results we want. But this does not limit the eventual results or eliminate outcomes we do not want.
While you are focused on the desired results of your interventions, you must be aware that there are going to be results of a different tenor. In the examples above most of the desires were similar: economic and political expansion. Nevertheless, this did not prevent demographic, religious, ecological, psychological and institutional changes. In most cases, the unintended consequences superseded the intended ones.
While you learn that history has lessons to teach us in guiding our actions, do not misapply this. It is the normal order of things for reality to surprise us. Outside of your interventions, life will continue to be full of surprises. Life is always going to throw up shocks and stresses and these cannot be predicted. What can safely be predicted is that they will come. This means you will be wasting time to create interventions that prevent surprises from happening.
Everyone has experienced some meaningful change in their personal life, work or community.