Staring at the Sun: Overcoming the Terror of Death by Irvin Yalom
Yalom is a Stanford psychiatrist who believes that anxiety about death is the root of our fears, but once we come to terms with impending death, we can learn to fully live life. He uses case examples from his clinical work and from readings to explain death anxiety and how to work through it.
The case examples were particularly fascinating. Overall, a thoughtful and thought-provoking book, but definitely not light reading.