The Zeigarnik Effect & Cognitive Load. Your brain is biologically expensive to run. When you try to "remember" everything, you create a state of high "Cognitive Load," which triggers the Zeigarnik Effect—a persistent mental "hum" of unfinished tasks and unrecorded lessons. This "static" creates the overthinking you feel. By externalising memory to a physical ledger, you "close the loop," allowing the prefrontal cortex to switch from storage mode back to processing mode.