I am Mexican, and in the northern-center region of the country, there are a native group that still exists and are preserved, called the Huicholes, which venerate the Peyote in a spiritual way, and they have a philosophic view similar to Taoism, where there are basically two opposed cosmic forces in this world, and the most important thing is trying to find a balance of them both. They also have rituals where they interact with the primal ancestor spirits of fire, deer, and other elements of the natural world, which was really common in North American indigenous folk.
Trying peyote in the desert was the best spiritual experience I've had and it really helped me find the balance in my life and really helped me understand the transition of realms. I've tried other hallucinogens too.
When I was little, I've always had this feeling that some spirit was stalking me, and it was really noticeable when I was left alone, especially when I was 3 - 5 years old. All these flashbacks recently came to me, because somehow I managed to block them, but It came to a point where I couldn't move at all when I felt the presence, I was completely petrified and I couldn't even raise my voice or scream. Then one of my favorite uncles passed away and I felt his presence the night he died, and the presence stopped.
I even have something a condition, that I never could explain it myself, called a "witch's streak" which is basically a single white streak of hair in the forehead, kinda like the one Sweeney Todd has. I got it from my mother. I always thought that I was different in terms of the connection of the other realm,
when I was living in Montreal and sharing experiences with different cultures, there was this place of relaxation and peace where I always found myself in the "in-between" if I can so call it, a kind of trance between realms. People considered me a Shaman there and usually wanted me to guide them for their psychedelic trips.
Pic related, Huichol art.