Passive income is an excellent way to generate extra income, whether you have a side hustle or a small business venture that gives you additional cash flow each month. With passive income, you can have money coming in even while you pursue your nine-to-five job. Then, when you can finally build up a solid passive income stream, you might want to leave your full-time job. Either way, a passive income gives you that security. If you think you must be an entrepreneur to create passive income, that's not exactly the case.