One can read a hundred articles about the best leadership traits or ten mistakes new leaders make—and this is written with the irony understood that this is yet another article on leadership—and if one took notes they would probably find that there is, out there in the ether, generally accepted knowledge about leadership.
Think of leadership in terms of the order in which on takes college course work and earns a degree. As an underclassman many of the classes one takes, the 101s, cover the history and best practices of the subject matter. Students memorize pertinent facts and theories and get to practice them on a small scale. As an upperclassman, students begin debating and testing theories, the projects include real-world application. Grades are based more on how you use what you know than what you know. You start build wisdom, not just knowledge.
As we know wisdom comes from experience. Talk to other leaders, share your experiences. Ask each other how you have put knowledge into practice and what were the outcomes? While anecdotal evidence doesn’t make for the most scientific data, discussion and sharing lets us share wisdom, which in the world of leadership is probably more valuable than another article which sites several studies that conclude praise is most appreciated on Tuesdays after lunch time.
Once you have become a student of the knowledge of leadership, the next step is to share wisdom (experience) among your peers and learn from each other.