I have read many books on the afterlife, ghosts, and the spiritual world and find this one lacking for two main reasons:
1) The therapist, Michael Newman, asks too many leading questions in his case studies. He allows his own view of the afterlife to taint the reports from the subjects. For example: he tells his patients that souls are androgynous balls of light, when the subjects are describing male and female being.
2) Newman generalizes to much, based on the limited data that he has collected. Although he does not admit this in the book, he has a very strong sample bias to his cases. This leads him to make statements like: “all souls choose the life they will live.” This may be true for the patients of Newman, who were enlightened enough to seek out his assurance. There is a large percentage of people living today that have not gained any self-awareness that would lead them to seek out Newman. Thus, a sample bias that excludes the subjects who had not say in the conditions of their current lifetime.
I would suggest people to read a more board set of case studies in the book Life After Life from Beatrice Brunner who channeled these souls which were recorded before a live audience. There are 13 additional cases posted on Quora.