The most advanced yoga poses push you right up to the edge of your comfort zone. In yoga as in life, it is often the fear of failure that prevents us from taking risks, says Beryl Bender Birch in Learn Crane Pose. But while you don't want to play it too safe, you also don't want to throw yourself thoughtlessly into danger. Instead, try mindfully taking the steps you need to build strength and confidence -- you just might realize that you have more potential than you thought. What will you do differently today?