I don't know; I think one of the most valuable psychedelic lessons is that your sense of reality is based solely on your subjective perceptions. There's this illusion that what we see represents truth that is "out there" when in fact truth occurs in the mind. Rocks and trees don't look at themselves and say "I am real!", that's just something that humans do to everything else as well as themselves. You can try to ground yourself after an experience like this, but I think such experiences are much more valuable as opportunities to explore the potential of our relationship reality.You may not want to take it literally though, and consider the possibility that you were merely confused