
You communicate with yourself all the time
Communication is not only between people. Intrapersonal communication happens when you think, daydream, plan, write a note, or talk yourself through a problem.Communication: The Conversation Inside Your Head

It helps run your mind
People use intrapersonal communication to rehearse phrases, process emotions, make plans, and guide behavior. It can also support memory, like when a shopping list helps you hold onto information.Communication: The Conversation Inside Your Head