In his 2003 book, Being No One, Thomas Metzinger contends there is no such thing as a “self.” Rather, the self is a kind of transparent information-processing system. “You don’t see it,” he writes. “But you see with it.”
Read Thomas Metzinger on the nature of subjective experience here.
How does a self help deal with the knowledge of death?
Animals self-deceive, and they motivate by self-deceiving. They have optimism bias; just like human beings, different cognitive biases emerge. So we have to efficiently self-deceive. The self becomes a platform for cultural forms of symbolic immortality, the different ways human beings tackle the fear of death. The most primitive and simple, down-to-the-ground way is they become religious, a Catholic Christian, for instance, and say, “It is just not true, I believe in something else,” and form a community and socially reinforce self-deception. That gives you comfort; it makes you healthier; it is good at fighting against other groups of disbelievers. But as we see in the long run, it creates horrible military catastrophes, for instance. There are higher levels, like, for instance, trying to write a book that will survive you.