How can I start supporting myself

I’m 19 years old, and a sophomore in college. I wanna pursue acting as a profession, but my parents don’t support it. They might kick me out if I want to really pursue it. Hoe can I say to support myself? I can’t imagine doing anything besides acting. And please don’t tell me that you’re too young or that you should just listen to your parents, because I really do want to act and I want to get there no matter what. I just don’t know how to start. Where can I find cheap apartments in New York City? What kind of things do I need to study or practice or get classes for when it comes to acting? Is is it really that difficult? Or can it be done with hard work? I’m really serious about this, I’m even paying for acting classes right now. What is the process