This gets to the heart of why visualization works. When you’re conscious mind visualizes outcomes, around say work or sport performance or really anything, your subconscious mind can’t differentiate it from reality; the better you are at visualizing the harder it is for your subconscious mind to tell this. It is why visualization is such a powerful performance technique. Negative self talk is really bad for you.

This is more or less the basis of a lot of western esotericism and ceremonial magick. Consider it a weaponization of the placebo effect, or the closest thing to creatio ex nihilo one can personally experience. Dialogue with the purveyor of negative self-talk is another modality in this space.