• Author, cartoonist, and musician Elizabeth Wagele talks about her book, "The Happy Introvert" and lists her other works: 'The Enneagram Made Easy', "Are You My Type, Am I Yours?" "The Enneagram of Parenting," "Finding the Birthday Cake," "The Beethoven Enneagram" CD, and "The Career Within You." She plays the piano music in the video also.