symmetrical balance definition in art If you lean in toward a rock, feet won't hold well; you need to remain out and away from the rock to counter the gravitational pull in the body. With your body in balance, move which has a slow, rhythmic motion. If possible attempt to maintain three points of connection with the rock, such as two hands and something foot. J.K Rowling's fantasy adventure series 'Harry Potter' has attracted readers worldwide as well as gained immense popularity, critical acclaim and commercial success since its first novel was launched on 30 June 1997. This article will introduce you five biggest selling books that could be the next 'Harry Potter'.