Cherophobia Happiness Facts, Phobia Facts | 0 comments Happiness levels are about 50% genetic, 10% circumstance, and about 40% choice. In other words, a large part of happiness is under our control. Fact source Submit a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.