Two sides of the same process called survival.
From the time we are born and possibly before that, we seek validation for our existence, validation brings balance. Based on our choice of the “why of our existence” (cause = I am), we each choose to create the “how of our existence” (effect = how I am ).
We then mold our behavior and attitude to fit the mental profile “how” with details representing an external picture of who we think we are or need to be. We then refer to this “how I am” profile throughout our lifetime, defending a reality that imprisons our “cause” by limiting the parameters to specific kinds of behavior associated with a specific thinking style that controls the “effect” “how I am” or the way people around us experience us.