The turning point for him in adapting and adjusting to his having cancer was when someone told him to personify his cancer to become angry with it, argue with it and defy it - it was told repeatedly to stop bothering and interrupting him while be was enjoying himself. It was told he wasn't interested in it as he had plans to go out that day for a picnic or to see a show or some other pleasurable activity.
To sum up, personification is all about using our imaginations to our advantage. We always have a choice to use it to create and/or make any situation worse or use our imaginations to help guide us through even the darkest of days. The first step is to create as vivid a picture of the odious impostor and happiness-snatcher as possible and the smaller you can imagine it to be, the smaller it will become.
We find what we look for in life. So if we are continually looking for troubles and pitfalls that is what we will find. If, on the other hand we spend the bulk of our time seeking joy, fun, happiness, how to improve our relationships with others, how to find new opportunities, new sources of inspiration and things that help us to feel at peace and content with our lot in life then bit by bit that becomes what we find. Choice is a very powerful tool to use in this regard. We can seldom choose to avoid a loss or misfortune, but we can always use that power of choice in how we deal with it.