How do Managers become Leaders?

Thread Prompt: How do Managers become Leaders?
Michael Watkins, in his article mentions about the 7 seismic shifts of perspective and responsibility for Managers to become leaders.
Which 2 or 3 seismic shifts, according to you, are the most important out of these? Why?
Draw from the assigned readings to shape what you write. You are also welcome to research other sources related to this topic and cite those sources.