Read these 3 books by Robert Greene:

Start with the 48 laws of power to understand the dynamics of public power and the hidden realities of life and people.
Then read "Mastery" to balance some of the manipulative tactics taught in the 48 Laws of power that focuses on real transformation instead of relying on tactics and manipulation as well as the role and importance of refined skills and value creation as the foundation power is built.
End the read with the "Laws of Human Nature" to understand how humans behave and the triggers behind most actions. It will help you relate aptly with humans, drive self awareness as well become a competent social creature in your family, groups, organizations, or place of work.
These three books will help you lead yourself, then lead you into results and in return help you lead others to achieve the results they seek.