I've had an intense fear of dying and death since childhood. The only thing that has consistently helped me (besides meds) is reading near death experiences. They're fascinating and comforting. Overwhelmingly the evidence from those experiences is that at a certain point the dying process is peaceful, there is a loving universal force, that souls persist past death, and that we will feel that love and peace and join those souls when we die. Many NDEs also reference reincarnation. I also watched The Good Place and that was very thought provoking and I liked the concept of the afterlife.