To begin with, I believe that Chapter 4 and Chapter 5 contradict themselves. In Chapter 4, the researchers claim that those that are more optimistic than their somber peers die sooner. Then, in the following chapter, they claim that those that are catastrophizers die sooner. As far as I know, a catastrophizer is far from optimistic. Therefore, shouldn’t they live longer? It seems that their definitions of each personality type vary.
Additionally, their findings were very somber. The idea that those either have anxiety or feel the need to put mind over matter will be punished with early death is sad. My mom always taught me that, with the right attitude, you can overcome any problem whether that be anxiety or a common cold. While I often was sick longer than my friends, I do believe that mind over matter has a positive impact on mental health. Therefore, it is very difficult for me to believe these findings even if they are grounded on evidence.