Every wisdom tradition in human history — from the ancient Egyptians to the quantum physicists — has arrived at the same truth through different languages: consciousness creates reality.
The Hermetic principle says "As within, so without." The Vedas say "Aham Brahmasmi — I am the universe." Quantum physics says the observer collapses the wave function. They are all saying the same thing. You are not in the world. The world is in you.