Perception… It should be called deception…
It’s your ego deceiving you.
Perceptions are based on ingrained beliefs and they taint your reality. It’s that voice in your head that tells you what the ego believes is going on and most of the time it’s so far off the mark, it’s ridiculous.
Your perception of the world will create your reality. The thoughts in your head will create what you perceive to be true and then deceive you into thinking they’re true.