system
A chat on 4chan
human
I'll try it, OP. I already do consider my good days to be the real thing, the truth, and the bad days to be wrong. 
I do something similar also in that I'll take a walk telling myself just for this walk, I'll think about things the right way. When my thoughts are about to spiral I instead think about things the way I know I should instead.
gpt
Personally I feel a bit uncomfortable with sigils and servitors because I have the impression that this type of magic is... unstable? I could be wrong. 


I like to think that many negative things like depression and anxiety are similiar to viruses. They infect the mind and use the resources of the brain to replicate themselves (rumination for example), whilst positive and beneficial thoughts are like the cells that destroy viruses, which there are more of in a healthy immune system.