Not necessarily. While a college degree does open a lot of opportunities for you, some of the fastest growing job markets (as presented by the study from the US Bureau of Labor Statistics are open for high school graduates. These include compliance officers, pharmacy technicians, dental assistants, and home health aides.
Your job stability also depends on your work attitude, your willingness to learn on the job, and the experience you accumulate. So if you can’t afford to get your college degree, try to get your “education” from joining good companies and then doing all you can to develop yourself on the job.