Don't just do it without serious research on the evidence for it and high confidence that your source knows what they're doing. There are many types of mushrooms that are very poisonous, and collecting wild mushrooms isn't something to play games with without appropriate education. And to make it better, there are a real number of AI slop books/resources muddying the water.

But there's a lot of evidence that even single doses have meaningful, lasting benefits.

There are as many "explanations" for the efficacy of psilocybin as there are models of consciousness. The one I like is that the drug causes an increase in neuroplasticity and that allows your brain to reroute its network more easily. I find it does great for helping me decontextualize experiences and strip them of the heavy negative emotional baggage some experiences have.

I don't know, I've heard it works well alongside therapy and having sessions to help integrate the experience. I usually just microdose and meditate with an intention a few timesin the week before a legit trip and let the drugs do their thing. Sometimes it's unpleasant in the moment but I always start a timer when I dose so I have seen over the years that the unpleasant parts are only like 15 minutes to an hour of the 6ish hour experience. Those 15 minutes can feel like forever because it messes with one's perception of time but even that gets less weird with practice.

They are powerful little guys though. I went to church after my most recent trip because it felt really right. That was odd since I'm not a practicing Christian anymore although I don't hate religion by any means I've just never gotten a lot out of it.

Others have said it more eloquently that I can but tl;dr:

You know how you have an id and an ego in your thinking meat? A correct dose of one of the "right' hallucinogens will just melt that pesky ego motherfucker. One doesn't need to achieve ego death to receive benefits.