I get glimpses, occasionally, of just how much my experience of the world is me reflecting back on myself.
What I notice, what I like, what I recoil from, it is all me.
Sure there is a “real” world out there. If I get hit by a car it will hurt.
But even that experience, what it means, how I respond to it, my state of mind as my last thought passes through my head as that solid object snuffs me out…
All of that is my consciousness filtering and sorting the only experience of life and the universe I will ever have.
Realising this changes your attitude to what is.