You cannot choose your philosophical system based upon bias-confirmation.
Philosophy must, by default, start from outside your own existence.
For any system of thought to have validity, it must be independent – you are acknowledging it, not the other way round.
“I have embraced Jovian Shamanism as the one true belief…” and that’s all well and good.
But it’s under no obligation to return the favor.
For you are less than nothing to Existentialism, to Humanism and any number of other philosophies.
You are less than nothing even to Atheism… but that’s a given, I suspect.
And you’ll remain less than nothing, to all of these and more, until you realize you are less than nothing.
Only then can you begin to become.