I believe it's important to realize that the "magic" is not in the mushroom.
> "Of course, the drug dose does not produce the transcendent experience. It merely acts as a chemical key — it opens the mind, frees the nervous system of its ordinary patterns and structures. The nature of the experience depends almost entirely on set and setting. Set denotes the preparation of the individual, including his personality structure and his mood at the time. Setting is physical — the weather, the room's atmosphere; social — feelings of persons present towards one another; and cultural — prevailing views as to what is real. It is for this reason that manuals or guide-books are necessary. Their purpose is to enable a person to understand the new realities of the expanded consciousness, to serve as road maps for new interior territories which modern science has made accessible."
~ Timothy Leary, The Psychedelic Experience: A Manual Based on the Tibetan Book of the Dead
https://en.wikipedia.org/wiki/Set_and_setting
Drugs like LSD and psilocybin are the chemical equivalent of banging on the side of the box to make the TV work.
With proper set and setting you can get profound effects from e.g. a sweat lodge, or even just hyperventilation (I'm referring to Leonard Orr's Rebirthing breathwork. I would normally link to the wikipedia article on it but that's been defaced by capital-S Skeptics and reduced to a note crapping on the whole thing as "discredited". My dad actually worked for Leonard Orr for a bit and what he was doing was pretty profound whatever it was.)
On the one hand, it's great that the vindictive hysteria around psychedelic drugs is calming down, on the other hand I wish the scientific establishment had a little more epistemological sophistication when it came to investigating the inner world.
To sum up, the cure is not in the pill, it's in the set and setting. The pill just gives you an excuse. You can also use e.g. hypnosis, prayer, drumming, dancing, sweat lodges, or weird breathing, to effect the change you want, just to name a small sampling of the available modalities.