When I was in Don Johnson’s trumpet studio years and years ago, one of the many concepts he tried to ensure we remembered was to divide our work into a pie chart. He wanted us to diversify the sources and types of income we generated to both ensure we could weather tough times and to create a balance in the type of work we were performing. It was a survival and growth technique.
Jack Cheng has a different approach to a similar equation which he calls the love-growth-cash triangle and I like it very much.
I find that most people take on new jobs, projects and hobbies for three reasons: 1) To learn something new, 2) To pay the bills, 3) Because they love doing it. These three things fulfill some of our very basic needs—they give us stability, excitement, ways to contribute and opportunities to grow.