Emotional Intelligence. Outsourcing can handle many headaches that take away from the actual craft of the Entrepreneur.
Focusing on Emotional Intelligence and understanding Human needs and Motivation is the skillset that will feed you for life.
It will also allow you to seamlessly transition into learning any other necessary skill in this digital age with ease because these emotional concepts govern ALL technical/practical techniques from copywriting - advertising to customer retention - lead generation and so forth.

He who knows "How To" is always employed by he who knows "WHY."
Concepts like emotion and motivation are not as sexy as practical strategies yet they are what every strategy is built upon.

Absolutely become a great manager, define the operations you must carry out and when, build an inexpensive outsourcing team to handle the "How To," and focus working ON your business and not so much IN it. :)