The theme of pushing forward exists in both because both Vivian and Addie refuse to give into death easily, they want to live a little while longer so they can find themselves which was another theme in both works.
The themes in both stories go hand in hand to teach us a lesson on living life. More than likely when we reach death we will have remorse, things we wish we had time to change, but we will realize that our clock has almost stopped and that we must race time to correct as many of those things we can ensure a death where we are at piece with not only ourselves but our maker as