Because the Central Nervous System has the job of adapting to life’s constant changes, it is able to literally change itself in response to life experience. This means that it can change how it reacts to life’s circumstances if given feedback about its own behavior (feedback is the basis of all life). Prior to 15 years ago, it was generally accepted that after 18 years of age the brain did not change. But within the last 15 years, research has demonstrated that it is a self-organizing, instinctual organic system and its very nature is ADAPTABILITY. Adaptability is the hallmark of survival.