This is why either having a good grounding in meditation techniques and having a guide on hand during a trip is a very important precaution to take for safe exp

This is why either having a good grounding in meditation techniques and having a guide on hand during a trip is a very important precaution to take for safe experiences. An experienced guide could have helped you break out of the negative experience. If you had better conscious awareness of your mental state, you could have recognized the slide into a bad state and prevented it. The flashbacks you were experiencing were very real traumatic flashbacks, like what a victim of violence would experience. The promising results that psychologists are having with psychedelic drugs all centers around having a trained operator guiding the experience to get a desired effect. It's not just a matter of dropping acid and you immediately see GOD and fix your PTSD.