Your mind creates the ONLY reality you can experience or know. Your perceptions, attitudes and willingness to experiment or gamble is the only reality you can know and YOU control it. Objective reality is outside, “out there somewhere”, but your experience of reality is in your mind.
So how real is real? To possibly find out you should try liberating your mind. For example, believing in just “one reality” is the most dangerous illusion. There are many realities created internally. Some contradict but none can truly reflect external, eternal objective truths because we cannot KNOW them. We can only BELIEVE in our interpretations of what we want to think these perceived realities are.