Dealing with Change is Not Always Problematic
I think there's a degree of over complexity here.
In many instances humans do cope well with change, most usually when such change is under their control or when external influences are compatible with those things that genuinely motivate us - i.e. things that are aligned with a sense of autonomy to create and develop, mastery of skills and activity that is arrived at autonomously because it is deemed as purposeful.
Change is only a problem when it falls outside of these parameters, the task then is to analyse, evaluate and explore to see if the change is something so powerful that it cannot be brought back to lie within the above parameters or to see how best to bring back that which can be brought back within the parameters.