Well if it makes you feel any better when I was 20 I was a high-school drop out working in fast food and STILL living with my parents. Things got better and then they got worse, but then they got much better again. Every time life took dips I got better at dealing with them and chances are you will too.

You are young, you can take chances now and you should. Someday taking chances may not be choice you can easily make anymore.