Ego death "achieved me" the very first time I tried pot. I guess I'm pretty sensitive to THC. As well I was pretty stupid and didn't do it in the right set or setting, or with experienced smokers. I expected a sort of opiate physical-feel-good feeling, nothing psychoactive.
I smoked a huge joint for my first time, smoked the whole thing. As my friends and I were walking down the sidewalk, my vision slowed...everything became choppy. It was as if I was drunk. Then I got tunnel vision. As I was walking behind my two friends, I got the most petrifying thought loop I've ever had...I can't explain it very well, but imagine the most shocking terror you can possibly experience and multiply it by 2. That lasted about thirty seconds I'm guessing but felt like an eternity. I mean...I've been in situations where I was certain I was going to die and it didn't feel half as bad as that. It was like the most horrible terror-feeling ever was then hit with waves of petrifying abject terror that consumed me.
Then, I fell down on the sidewalk...but felt no pain whatsoever. I was very dissociated from my body. I read a bit about DXM and what I felt was very similar to some bad DXM experiences (minus the hallucinations).
Then...complete and total ego death. I didn't know who I was, or what I was. I didn't know anything. I was purely reptilian brained, 300 million years of evolution thrown right out the window. I didn't realize at the time what was even happening to me. It was as if my reality, something I have always taken for granted, had morphed into the most terrifying nightmare you can imagine. I didn't expect this either. Before I even fell down I had lost all insight, meaning I didn't know I smoked marijuana. Even if I did I couldn't have comprehended what that meant. And it didn't last for only a few seconds. I didn't realize who "I" was until about an hour afterwards.
I personally didn't enjoy the experience one bit. I didn't know for several weeks what the hell happened to me. I think when I had ego death I also had a panic attack, and had continuing panic attacks for a week afterwards. Got derealization and all that jazz. It wasn't a fun experience.
The only "enlightening" thing about it was that I realized how truly absurd this reality is, how strange it is. If you ever get completely disconnected from your ego and experience reality as it really is, you will realize how strange it is as well. And it isn't always a good thing. If you're like me, you normally bask in the illusion of the ego. Once that illusion is gone it's pretty hard to stay sane but I've dealt with it. I wish I never had this experience. I liked just the illusion. "Ignorance is bliss". I have been an atheist for years but this experience made me agnostic.
I'll never use any psychoactive drug again (well I guess I'll stick with caffeine!). It was too intense. I don't know how some of you can enjoy ego death! Maybe if you're already a spiritual person you can enjoy the experience because it fits your pre-existing philosophy but it tore my atheism right out the window. I couldn't really understand the Buddhist religion before that but now I understand it perfectly. Who knows, maybe it was a drug-induced psychosis or a schizophrenic episode. I've been kind of scared ever since thinking I may have some sort of underlying mental illness like schizophrenia...I didn't feel normal for two whole months after that.