LEO (July 23-Aug. 22): "In games there are rules," writes science fiction author Kim Stanley Robinson, "but in life the rules keep changing." This is always true, but I think it's an especially poignant truth between now and your next birthday. During the next few months, you may sometimes feel as if every law, formula and corollary are mutating. In some cases, the new rules coming into play will be so different from the old ones, they may at first be hard to figure out. The happy ending: It may take a while, but you eventually see these new rules have an unexpected logic and beauty to serve your future well.