The second exercise creates a simple visualization to focus your mind and attention. It was chosen to allow an exploration of your inner dimension, or your inner self. Sources: The Second Centering Book by Gay Hendricks and Thomas B. Roberts. Prentice-Hall, Inc. Englewood Cliffs, New Jersey 1977. This book has been in my library since 1977 and I have used the author’s offerings over the years for meditations for workshops and in therapy.