Our brain’s limbic system files every event that we have ever gone through, with our recorded emotions. Description from the Cleveland Clinic: it is a group of interconnected brain structures that help regulate your emotions and behavior. It works together with other brain regions by processing your memory, thoughts, motivations, then tell your body how to respond.
That brings Proverbs 4:23 to the front. It says, “Keep your heart with all diligence, for out of it spring the issues of life.” Unresolved issues harbor emotional pain, remain buried, and are not registered in our conscious mind.
However, they continually seep into our thought processes. That is why we negatively react to something in our present that reminds us of a past event. The emotions are triggered which instantly activate our sympathetic nervous system ~ or fight, flight, freeze.
It is essential to release things from our past. They only exist in our mind. No way to change them. However we can stop carrying their heavy emotional baggage. It is over. Our past is passed. Let it go and embrace your present.