After my PhD in physics, I learned starting a company that I needed such skills and devoted myself to learning them.

Now I teach the social and emotional skills underlying leadership, entrepreneurship, and initiative at NYU (student reviews: http://joshuaspodek.com/this-is-one-of-the-greatest-classes-... and videos of them describing the courses: http://joshuaspodek.com/nyu-students-speak-joshua-spodeks).

I made book versions of the courses. Amazon makes the first chapters of each available free, which goes into more detail on what I learned and its value:

Leadership Step by Step: https://www.amazon.com/Leadership-Step-Become-Person-Others/...

Initiative: https://www.amazon.com/Initiative-Proven-Method-Bring-Passio...