Whatever you envision, nothing stops you from experiencing it but you. Challenge your basic assumptions and discover what is untrue. The brain plays tricks on you.
That which you take to be free will is itself a way of filtering options. By the time you make this choice, you have ruled out others. All-the-while, something sees beyond the choices. It observes the brain, how it operates, sees what people cannot possibly see.
In essence, everything that can ever be felt or known fits into the mind. Anything you can see in the world emerges from there. Its size is unfathomable. Watch what happens as you make the quantum leap from sensing one universe, to many. Let go of everything you are ever taught. Know you never stand in the shadow of giants, you stand on their shoulders. Take any insight you gain further.
"Never make the mistake of thinking you are alone — or inconsequential. Ignorance is voluntary and confusion is temporary. You see the world as-is, which is more than can be said for the vast populace." -Rebecca McKinsey