An excerpt from my latest Sasstrology article (please leave comments on the Sasstrology site):
"When you get hit with a Uranus transit, at least one area of your life will be shaken and stirred. Most Uranus transits are dramatic, but certain ones are significant turning points in your life (like the Saturn return). The Uranus square (when transiting Uranus squares your natal Uranus) occurs for everyone around the ages of twenty-one and sixty-three (roughly). It triggers two watershed moments in how you express your individuality."