Ok like most of you I’ve taken psychedelic drugs. I’ve had bad experiences sure, but I’m fine now. The issue is that what people generally say, like, “oh sometimes you need to encounter your demons,” maybe that will be temporarily traumatizing—in general people recover from that. The real issues are…more complex. More complex than any diagnoses in the DSM can cover. The brain is very complicated, and everyone’s brain…
There were indeed some "bad" trips, although I really do not like the term "bad". IMHO there is no bad journey, it is stuff that needs that wants to be seen.
Nor is the journey itself what counts, one cannot expect a quick fix from a 4 or 5 hour journey. What really counts is the preparation (4 to 8 weeks) before, and integration afterwards (again 4 to 8 weeks). In my case I also paired it with years of therapy and meditation.
It takes a lot of courage, especially to continue after an unpleasant experience (fear, grief and loneliness in my case). In my case I kept coming back and allowed myself more and more to let the bad experiences happen. Finally I just learned to be with what is, and accept things and myself the way it all is. With that came a measure of peace and insights I had not experienced before. Along with visions about the structure of existence.
But I'll stress again, just popping a mushroom won't get you there :)