A 360 leader is someone who can lead from any position within an organization by leading down to direct reports, across to peers, and up to managers. The document discusses leadership myths like thinking you need a leadership title to lead. It contrasts one-directional leadership with 360 degree leadership and provides examples of how to lead down by developing others, lead across by helping peers, and lead up by supporting managers. Challenges of 360 leadership are outlined like pressure from multiple roles, unsupportive leaders, competing demands, and communicating vision without authority.