"I'm okay—I've been through this—it's just the sort of prodrome that could develop into paranoid schizophrenia, but won't, because I've been trained not to believe my own thoughts!
"But the relationship between psychology and philosophy is funny. I've been having pretty drastic mood swings on the timescale of hours or minutes, and I've also been paying a lot of attention to modal realism, mathematical universe, "existence as an ensemble of disconnected observer-moments"-type ideas. I think the causality actually goes in that direction: from psychoticism to Tegmark IV. But the nature of reality can't actually depend on the minutia of my particular form of mental illness ...
"I don't want to do philosophy or social science or futurism anymore; I've lost the ability to do it sanely, if I ever had it. My brain just keeps generating cosmic horror stories to be terrified of, when really it's not my business and can't be my business. Most of what happens in the future is outside of my current conceptspace. Most of what happens in the present is outside of my current conceptspace. It all adds up to normality locally: that is, that which we consider normal is an artifact of how the world has unfolded up to now.
"Better to take up an engineering mindset. Focus on solving practical problems in the only world that I can actually touch, rather than continuing to execute self-injury behaviors dwelling on the horror that must exist in the vastness of space and time.
"I'll be fine—for the near future. Only I miss how consciousness used to feel. I used to feel like I knew things, but now all I can do is make predictions."