even if we have the desire to change, the process of change doesn't feel like "us" - it is clunky and unnatural and our body signals to us that we should go back to what we know.
It is very real. Once we get used to one activity, our body or mind does not want to change to another activity. We have a saying here, man is a slave to habit. So maybe once we get used to something it doesn't change easily.
When we becomes slaves to anything, it ends up costing us more than we want to pay.