Human beings are hardwired to think about mundane irrelevant things periodically even if we elevate our state of consciousness to an higher level of thinking.The effect is ephemeral and we tend to go back or settle down to a lower tier again. It’s like constantly running away from darkness in search of light,(i.e the big picture of consciousness). We need to keep reinforcing ourselves the big picture of existence, as we haven’t evolved as a species to have that kind of higher metacognition as a norm yet.