Our bodies come and go, are constantly in a state of flux, and are not designed to last forever. It would be a plague on this planet if everyone went on indefinitely. And so we have various agents that are beautifully designed to take us out and make room for others. Cancer is nothing more than one of these agents. It is not the Big Bad Wolf, it is not some malevolent spirit that is attacking us personally.
We are spiritual beings partaking of a physical existence. These bodies are our rental properties to care for with respect and gratitude. But they are not us. These bodies are no more us than the apartments or houses where we live. Therefore, Cancer, though not to be taken lightly, is not to be feared either. For nothing can ever kill the Eternal Soul.