Existential Shock exercizes

[Storm02]

A experience that happened to me, and it was a  spiritual experience, happened to me without much meditation, contemplation and self inquiry, and it led me to analyze why it happened to me. I came to the conclusion that this happened because I was thinking, two or three times, about life and death, god, and so on, and i have experienced shock and panic attack. it would be good thing if there is a video that talks about it and explains some exercises that we can do.