Grief (novel)
During the course of the novel, the ideas of the stages of grief are introduced. The stages are denial, anger, depression, and acceptance. The narrator, as well as other characters in the story, slowly passes through these stages in trying to deal with death.
Breakup
A natural effect of the loss of a relationship that an individual had hoped to keep is grief, because the desire to keep relationships intact despite problems and complications is a natural human desire. This results in individuals undergoing a breakup displaying grief reactions that include symptoms like sleeplessness, depression, and thoughts about suicide. This tendency to express grief and depression is so prevalent that researchers point to it being a significant contributor to the first onset of major depressive disorder in young adults.