Fear of not being able to provide for oneself?

I just have this fear that I won't be able to provide for myself, materially. That even if I have a job, I somehow won't be able to survive off of the salary. So I've been dependent on my parents quite a lot, but they're not people you want to be dependent on either way, because in return for the money they give, they basically control your whole life. But how do I get over this fear? And where does it come from? And could it be that I have Dependent Personality Disorder? I just feel like even if I have a job, I will starve to death and won't be able to feed myself. It's literally a phobia.