I now get your point, my apologies, I should have gotten it from your initial message. What you’re looking for is an altered state of consciousness, which is why I pointed out drugs such as nicotine or marijuana. As far as giving yourself a j Arthur on the toilet, Crowley did far worse.
EA calls it theta gamma sync. The CIA calls it the hemi gateway sync.
It’s a difficult process to get to that state of altered consciousness, but one thing remains the same, the brainwave. Sleep deprivation or fasting can also induce this consciousness.
Here is a search result which might help: