Could a Side Hustle Be Your Best Investment Yet? What if your best investment is a side hustle? And, this is why Guillebeau wrote Side Hustle: From Idea to Income in 27 Days. With a side hustle, you earn money without quitting your job (that’s why it’s called a side hustle). “A side hustle isn’t a part-time job,” says Guillebeau.

Source: Forbes September 23, 2017 19:52 UTC