Not sure if serious. If serious: "You could think of them as hallucinations that can think and act on their own." (from the subreddit) seems very close to teaching your brain to become schizophrenic.
Hallucinations are a highly salient symptom of schizophrenia, but are neither necessary nor sufficient. I am confident that, like a lot of religious beliefs, this kind of deliberate self-deception would be unlikely to contribute to psychosis.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.