People with interesting lives have no vanity. They swap cities. Invest in projects with no guarantee. Are interested in people who are opposite of them. Resign without having another job in sight. Accept an invitation to do what they have never done. Are prepared to change their favorite color, their favorite dish. They start from zero countless times. They are not frightened by getting old. They climb on stage, shear their hair, do craziness for love, purchase one-way tickets.