Having spent a few years researching and conducting experiments with regards to this general topic (as well as diagnosed ADHD), I’ll say that if you’ve seen the words “psychadelic” and “trance” in the same sentence, doublecheck that you’re not reading something about hypnosis, but I digress.
You are using the phrase “doesn’t hurt to try” incorrectly. There are a lot of things you can try that can and will hurt in ways you cannot yet imagine. This is probably one of those things.
First, do not do anything that will lower your internal defenses. This stuff isn’t a fetish or a game you can just start over again if you lose, especially if your end goal is body possession. Which, on that, I won’t say any more, just hit that search box for body possession and check the results.
I understand the allure. I’ve experimented on and off (prescribed) meds, specifically Adderall, which I would advise against because you cannot precisely predict when you will get “stuck,” so when it does happen it might not be the thing you were meaning to and then you’ve wasted 12 hours. Then of course there’s Adderall’s trailer trash cousin which is even a worse idea.
Same with psychadelics. You cannot control the trip, and if it happens to be a bad one, you could get stuck in a bad place for a very long time.
That being said, if you have migraines or cluster headaches, take the shrooms. I’ve been to grad school so I have access to all the journals and shrooms have been shown to cure them. Also if you’re wanting to look inward. I know a couple who tried it to help with her migraines. She ended up having a bad trip and landed inside her own head. The guy ended up holding her hand and keeping her grounded trip sitting through all of it and helped guide as she was walking around. She told him that there was something there inside her head that wasn’t supposed to be there. She saw it, was looking at it, but couldn’t identify it. Like two months later an MRI showed a craniopharyngioma next to her pituitary gland. (she was treated, it is gone, and she is recovering…despite two court hearings denying her disability for a brain tumor)
DMT is being looked at clinically as well, though if you take it be in mindset divorced of anything in here, especially possession. The studies that have been done on it, probably the one with the most impact was one that showed it boosted spirituality. People already spiritual or religious came out a bit moreso. Devout atheists came out believing in a higher power. Not necessarily the Judeo-Christian God, but something nonetheless. For more on the subject, I would definitely check out Erowid (google it).
Pro-tip: The best place to read up on subjects like drugs is while sitting in the waiting room at a doctor or therapist’s office, waiting for the nurse to call you in so you and the doc can start to figure out why it’s so hard for you to sit still and keep your mind focused on a single topic for any length of time.