Interesting isn't it.
I like to read your work Alina, it resonates with things elements that I became aware of.
Sometimes it helps to calibrate my state. Because after a while our quest can become so intense that we sometimes might start to fool ourselves as well.
That said,
Most of the things can be accomplished without substances.
Although some substances might serve as an essential help to many.
The name astral projection might distract us from the essence, because the experience is rather close. Imagine you, seeing yourself within the same room from a different angle (as a third person). And than try to envision yourself not as the person you feel you are, but as the person you want yourself to be (or need yourself to be).
Keep up the writing Alina.
Thrive.