DmnStr8 you have the most fitting username! Very good information.
Quote:. It can create a feeling of fight or flight when no real danger is present. That goes to show that the mind is wrong. The ego is fighting for control of the situation. Watch this in yourself should you get these feelings. Nothing is happening that is dangerous, yet the mind creates emotions and thoughts to so you will not proceed.
I think most of us can empathize.

It's such a loud, overwhelming
place, and one thing I've found unique-and uniquely unsettling-about DMT is the fact that the cognitive mind seems relatively intact. It certainly is jarring for the ego, and the rapidity of onset can elicit a panic response.
I've never heard it put as a fight or flight response, but that is exactly what it is. The first time i did DMT (well second but the first was 25 years ago), which i thought was like the 8th time, i totally flipped when jesters peeled the ceiling away and ran out of my room, down the hall and gibbered in the shower for the remainder of the trip. I had been doing 5meoDMT, and it's comparative lack of visuals was what i thought spice was. So i got scared at the visions that replaced my reality.
What is your preflight ritual? I've found that light yoga, stretching, breathing and finding a comfortable pose, spending as much time as needed to truly quiet the mind and setting some intent, asking for guidance and protection, that kind of thing really lowers the anxiety and potential for a rough ride.
Also the outdoors idea isn't a bad one. You should be maybe be a little more confident (read:experienced) and have a companion first though.
Sine experientia nihil sufficienter sciri potest -Roger Bacon
*γνῶθι σεαυτόν*