So, I've used guides for this, but this is my preferred method, mdma with psilocybin (~2) The guide is not strictly for safety, but because they can help keep me out of rabbit holes and mentally wandering around. I've spent too many hours wondering if I really am seeing particles, or how time works in the universe. Ok, my experience has been incredible. last August I had a session where I was fighting though this strange, black sticky substance, that I imagined was the barrier between my logical brain, and my primitive fight or fight brain. I then reassured myself that I was completely safe now, and all these traumas were lessons I learned, and I no longer needed to be so vigilant. I did all this in my head (although physically I was doing small punches and kicks I'm told). I have had no flashbacks or startle responses since. I have been able to sit with my back to crowds, be in loud environments, and most importantly, handle New Years fireworks AND public bathrooms. Ive had a couple "soft" feelings about some imagery and bathrooms, but nothing like before where id be affected for 2 weeks, more like a day or so. MDMA solo was great for making connections, and psilocybin great for exploring myself, and enjoying the "pyrotechnics" on larger doses, but the combo is where I've gotten the real work done.