The Dilbert creator, Scott Adams — credulous numpty that he is — turned me onto a weird 'affirmations' thing when I was younger and less equipped with critical thinking. He wrote about it in The Dilbert Future (if I recall correctly), dedicating the last third of the book to presenting his bizarre worldview. In short, he believed that the human consciousness skips between parallel universes wherein every possible future is laid out.... In universe A, you go on to become a bank manager; in universe B you go on to become an artist, etc...
His thought was that you can direct your future by what you believe to be true of yourself... Hence why life always works out fine for some people or always works out crappy for others — you get more of what you believe in. I tried it, and aside from working out SPECTACULARLY on one occasion, there never seemed to be anything in it.
But laying aside the speculative bollocks, there might be a grain of truth in the approach, as your mindset will determine the opportunities you spot and how you respond to them. Some people do better than others as they have an instinct for whatever will get them to what they want — if you're hapless then that instinct isn't there.
Soooo... We create our own realities.... Bingo.
... But not 'reality' reality — of course we flippin' don't.
We agree to it and participate until we begin to wake up to our true selves. I always saw myself as a conventional, religious cis hetero woman, but I was wrong about that.
Once I divorced, I realized didn't really agree with Christianity or even feel comfortable with my assigned female role. So I revised my view of myself.