My first ND type experience came when I was about 17 or 18 and I took a dose of magic mushrooms. Truffles. I left the ego and the painful stories of my life. Existing without a body, unlocatable and deeply peaceful. Totally present. Then I had the experience of realising this was an experience caused by drugs and I would have to return to my normal existence. This was painful.
My next experiences: I'm again calling them near death type experiences but in fact I can't be sure how close to death my body was. My guess is not very close to bodily death. But noticing the connection between these experiences and my actuaI near to death experience I am including them. I had taken large doses of Ketamine on 2 or 3 different occasions and the experience was of complete disassociation with the body and loss of consciousness of the body. I was in the state known as a k hole. Unaware of my surroundings but still breathing. I experienced myself as feeling light and of spirit not form. On my first experience I was talking with a voice which I assumed was God. He was familiar and recognisable and reminded me of myself somehow. I was full of questions about meaning of life and why I existed. I was shown that things are not as they seem and the vital importance of space and non existence. I found the lessons hard to understand and along with a realisation of unity and feeling of being all alone, it was a bit overwhelming.
The experiences were amazing, showing me how everything is made from the same energy and also time is not as it seems. I saw things which haven't come to be yet and some that already have.
My actual near to death experience was after a methadone and alcohol overdose. I was discovered turning blue, barely breathing and non-responsive. I needed two injections of another drug to stabilise me. I remember an experience of going through a lot of emotions and fear and then suddenly I was in the unlocatable indescribable peace and love which I have always been looking for, and not just in it; I was it. I felt great joy, peace, relaxation, and calm. And the feeling there was nothing to worry about in the first place. I was given choice to return to body and my life. I didn't want to but I was shown the effects it could have on my family, me dying in this way, and I felt a need to return.