The sense we have of ourselves as permanent beings is a delusion. Nothing is permanent.
The mistake we make, is that we see ourselves as the rocks and the ground underneath a river, rather then the water itself.
We are always in a state of change. We are changed by our senses and by our moment to moment interaction with the world around us.
It's when we create attachments, anchors to the self, it is then that suffering arises.
Accept change. Peace is found within the flow of the water.