Read the book “Proof of Heaven” by Dr. Eben Alexander - a Harvard Neurology professor and skeptic whose brain was completely shut down from meningitis. He writes an amazing a beautiful account of his experiences when there were no clinical signs of brain activity. He returned a believer.
I wouldn't recommend Alexander's book. During his NDE, he was visited by a female figure---if she was supposed to be an angel, that isn't Scriptural, since all angels in the Bible are male.
This apparition told him, "There is nothing you can do wrong", which is an open contradiction of the concepts of sin, repentance, and judgement.
If Alexander is a believer, his current job is very unsuitable. He works at the New Age Monroe Institute, which is not far from where I live. It promotes out of body experiences, channeling, and "exploring your consciousness."