CANCER (June 21-July 22): In 1967, dissidents dreamed up a novel way to protest America's horrific Vietnam War. They marched to the Pentagon, the military's headquarters, and performed an exorcism to purge the place of its evil. With the power of songs and chants, they invoked magic spells to levitate the 6.5-million-square-foot building. Their plan didn't quite work in a literal way – the Pentagon stayed firmly on the ground – but the legend they spawned was potent. When I heard about it years later, it inspired me to be an activist. Myth-making is your worthy goal. Dream up an epic task or project to fuel the imagination for a long time.