Not through a attempt but I had neath death experience when I was a child. I never saw anything supernatural but it was a surreal feeling. My last moments of consciousness was this feeling of acceptance and peace. But I don't think I could do it justice by defining it with simply peace. It was like the greatest inner contentment I ever felt in my entire life. Nothing has ever matched it and to this day remains the best feeling thing I have ever endured. It was like a spiritual experience or at-least it sure felt like it.