We enter this world as complete innocents, devoid of logic or rationalization. Some say that this state is animalistic and instinctual. Others speak of an internal connection with mother, father, both, or neither. Like much of the world, what happens is filtered through the lens of symbology for the person involved. What is interest and concentration to me may be a full diaper to others.
As we develop and grow, this innocence is replaced with the lessons and memories of youth, adulthood, and old age. Our minds and souls are like a slate board that continues to be filled until the day we die. While that board is vast and can contain the combined experience of a person, allowing it to get cluttered with anger, hate, and other feelings takes up room and displaces the joy, harmony, and positive aspects of a life.
It is possible to periodically throughout life to open up sections of this board by removing the negative. Unfortunately, it is just as possible to remove the positive because of hurt, sorrow, fear, and anguish. Observation and mindfulness of how we live and interact with the vast world around us is essential to ensuring that what is written is what we want. Focusing only on one section of the world or your life makes it so that the rest goes unwritten, forgotten from the history of your life.