Put aside all the overhyped new frameworks, the listicles, the "10 best things you need to succeed as a leader today." The critical leadership practices--the ones that will allow a leader to make the biggest impact over time--are well established. They're about how you create a vision and inspire others to follow it. How you make difficult strategic choices. How you lead innovation. How you get results. These fundamental skills are even more important today as organizations and teams become increasingly networked, virtual, agile, fast-moving, and socially conscious.