The key to wealth isn’t your primary source of income, it’s the growth of secondary income through side jobs.
Consider this: the typical person has one full-time job, which represents one source of income. Let’s name this typical person Phyllis. As long as she’s employed, Phyllis’s job serves as a stream of revenue. Yet, Phyllis has far more uses of income than sources of income. She has to pay for rent, utilities, groceries, insurance, etc. These add up fast.