“The Principle of Multiplexing”. 

By redefining What You’re Selling – Who You’re Selling It To – And the various ways you’re Getting Paid – you can move significantly further into the equation of being paid for your Knowledge – rather than your time. You want to consider defining what you do in such a way that you can sell it to the largest number of clients (or buyers) – at multiple locations and times – while avoiding the trap of being a “commodity provider”.