This is something I am very interested in and I'm gonna share some of my thoughts here
if you manage to read all of it, I'm impressed

I'll list here the most distinctive moments of otherworldly experience taken from contemporary books on life after death.

1. Seeing a double.
Upon dying, a person does not immediately realize his state. Only after seeing his "double" lying breathless below him and becoming convinced that he is incapable of making himself known to the living, does he realize that his soul has left its body. Sometimes, as in an unexpected accident or other sudden death, the soul does not recognize its body and thinks it is someone else, who looks like them. The seeing of one's "double" and the inability to attract the attention of the living creates a shocking impression on the soul, so that it is not sure if it is a dream or reality.

2. Continuous consciousness.
All, who have had a life after death experience, witness that they maintained their feeling of self, all of their mental and sensory abilities and their free will. In fact, their vision and hearing became more acute; their thought acquires precision and becomes extremely energetic, the memory clarifies. People who had long ago, due to illness or age, lost certain abilities regained them anew. They could see, hear, think and so forth all without the aid of their physical being. It is amazing; for example, that a man blind from birth, upon leaving his body, could see everything that was being done to his body by the doctors and nurses. He later recounted everything he had seen in great detail. Having returned into his body he was again rendered blind. The doctors and psychiatrists who define the functions of thought and emotion as just electrochemical processes of the brain should look into the data gathered by the reanimating doctors in order to correctly understand man’s nature.

3. Alleviation.
Usually, death’s precursor is illness and suffering. However, once it has left the body the soul rejoices that the pain is gone and there is no longer any pressure or choking. The mind is clear and the senses tranquil. The person begins to accept his soul, and the body becomes secondary and no longer necessary, as does the rest of the material world. " I leave, and the body — an empty shell" explained one man with near death experience. He watched the operation on his heart like "an uninvolved bystander." Attempts to revive his body did not interest him. Apparently, he had made his peace with his past life and was ready to start a new and better life. He did, however, retain love for his family and concern for the children whom he was leaving.

At this point, it is important to mention that there is no rudimentary change in the character of one's personality. The uniqueness of the personality remains as it was. "The supposition that upon discarding the body the soul begins to know and understand all things — is untrue. I came into this new world the same as I had left the old." (narrated K. Uekskuell).

4. The Tunnel and the Light.
Soon after seeing its body and surroundings some souls continue into the other spiritual world. While others, not noticing the first, go directly to this second stage. The passage to the spiritual world is described by some as a journey through a dark space, reminiscent of a tunnel at the end of which they come into the realm of unearthly light. There is a painting of the 15th century of Hieronymus Bosch "Ascent to Empyrean" that depicts a comparable travel through a tunnel. It must be that even then this experience was known by some.

The following are two modern-day accounts of this stage:

"I heard the doctors declare me dead. At the time, I was swimming through a dark area. There are no words to describe this condition. I was surrounded by darkness and only far in the distance could I see a light. It was very bright, although at first it seemed small. As I came closer the light grew. I was being carried towards the light and I could feel that it emanated good. Being a Christian, I remember the words of Christ, who said, "I am the light of the world," and I thought. If this is death, then I know who is waiting for me

"I knew that I was dying" another man recalled. "I could do nothing to relay this as no one could hear me. I was outside my body. This is for certain, since I could see my body on the operating table. My soul had left the body. Consequently, I felt lost, but then a special light shone. At first it was pale, then it became a bright beam. I felt its warmth. The light enveloped everything, but did not impede my ability to see the operating room, doctors, nurses and all the rest. I could not understand what was going on and then a voice out of the light spoke and asked me if I was ready to die. He spoke as a man even though there was no one there. It was, evidently, the Light which was asking me… Now I understand, that He knew that I was not ready, but was in a way testing me. From the time the light began to speak, I felt a well-being; I felt safe and He loved me. The love coming from the Light was unimaginable and indescribable"
All who have seen the otherworldly light and have tried to describe it could not find the right words. The light was unlike the one known in this world. "It was a light, void of darkness, complete and full.". Most testimonies speak of the light as a morally good being, not an impersonal energy. Religious people identify the light as an Angel or even as Our Lord Jesus Christ — in either instance as someone bringing love and peace. On meeting with the Light they do not hear separate words uttered in a recognizable language. The Light communicated with them by way of thought and in such a way that everything was so clear that to conceal any thought from the Light was completely impossible.

5. A review and judgement.
Some near death survivors describe a session during which they reviewed their lives. Sometimes the review happened during their vision of the Light, who asked them, "What good things have you done?" Though, there was an understanding that the Light already knew the answer, but wanted to raise their awareness of the moral value of their actions in life. Immediately after they are asked, their spiritual eyes allow them to see their life, from early childhood, unfolding before them like a slide-show. A series of quickly changing pictures, each detailing an episode in which the person can clearly see all that has happened to him. During this time, the person re-lives these scenes and morally re-evaluates everything he had said and done.

Here is a typical story, illustrating the process of review. "When the Light came, he asked me: "What have you done in your life? What can you show me? (Or something to that effect). And then these pictures started to appear. They were very perceptible, colorful, three-dimensional and moving. My whole life passed before me… here I am, still a small girl, playing with my sister… then scenes from my home… my school… here I am getting married… everything quickly passing before my eyes in great detail. I again re-lived these experiences… I saw an event, where I was vain and cruel. I felt ashamed and I wished it had never happened, but it was impossible to change the past".

From a collective look at many of these stories of life-reviews, it is important to include that these experiences have always left a deep and beneficial impression on those who have had them. Indeed, during the review a person is forced to re-evaluate his actions, prepare a summary of his past and in so doing, judge himself. In daily life, people hide the negative sides of their personality and in some ways hide behind their good deeds in order to appear to others to be better than they actually are. Most people become accustomed to this hypocrisy, and stop seeing their underlying nature that is often proud, vain and covetous. But, at the time of death this mask is removed and a person sees himself as he really is. Especially those actions which were painstakingly hidden from the world, are seen in full panoramic 3-D, — each word is heard, long forgotten events are experienced anew. All of life's accomplishments, social and economic: position, diplomas, titles and so forth, lose their meaning. The only thing that is evaluated is the moral worth of each action. Then the person must judge himself not only for what he has done, but also how he has through his words or actions affected other people.

Here is how another person described his review. "I felt myself outside of my body, floating above a building, and I could see my body lying below. Then a light surrounded me, and within it I could see a vision of my whole life. I became incredibly ashamed, because of what I saw. Many things, which I had previously considered normal and had justified, were now obviously wrong. Everything was extremely realistic. I could feel that I was being judged and some higher intelligence was guiding and helping me to see. What amazed me most is that I could see not only what I had done, but also how my actions had affected others. It was then that I understood that nothing goes unrecorded and that everything, even each thought, has a consequence".

The next two excerpts from people who have experienced life after death demonstrate how the review has taught them to look at life differently. "I did not tell anyone about what I had experienced in the moments of my death, but when I returned to life, I was troubled by a desire to do something good for others. I was so ashamed of myself." "When I returned, I decided that it was imperative to change. I felt repentant and my former life did not satisfy me. I decided to start a new way of life".

Part 2 will follow soon

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Even an amateur can summon spirits...It takes training to send them back