Follow your dream.
You don't necessarily need to be a famous star to make a good living as an actor. I came to the USA in 2001 after graduating from law school in Mexico (to make my father happy, but honestly, it was a waste of time) with the intention of making a living as an actor, whether I became famous or not. All I wanted to do was move from "struggling actor" to "working actor". The first 3 years I had to wait A LOT of tables and in the meantime I started the process of auditioning, getting both my SAG and AFTRA cards, finding my agents and just basically getting to know the process of how this industry works. I found my niche in Voice-Over work, especially for the spanish speaking market in the USA. Since 2003 I've been making a living exclusively as an actor, have a wife and 2 kids, a mortgage, I have now qualified for a retirement plan in both unions, health insurance from the unions and while I'm not doing movies with Steven Spielberg, I'm still doing on-camera work for commercials and independent projects (Not bad for a Mexican, huh?).
I have actually helped several friend actors who just moved here with directions on what to do, where to go, how to do this or that... so pm me if you need any tips, but only when you have finally moved to L.A.. Actors who ask for advice while still living in Kentucky with their parents are usually not yet commited to their dream and just waste people's time.
Ask yourself really hard if you want to do this and if you do, don't look back once you've made the decision. I hope my little story has inspired you a bit to follow your dream.
I wish you good luck!