I would not go off alone. I think you have a dangerous fantasy going, based on your use of the word "escape". When I was about 20 and within a semester or two of leaving college I decided I wanted to join the military and be stationed as far from my stepmother and family as I could be to find myself (I was picturing "Alaska" :-) I don't think it works like that (I'm 62 now) and I'm glad that plan (I did the tests/interview to be an officer after graduation, I wasn't chosen) did not work out for me.

If you are chickening out, I would take that as a clue for myself. I'd try to figure out a job or schooling, something that would "separate me" from whatever it is I was trying to escape. My parents lived in suburban Maryland and I moved/went to live in Washington, D.C. (all of 45 minutes from them :-) Figure out a more practical way to escape, that moves your life forward; it is my experience that "vision quests," and finding one's self quickly doesn't last. One has to live one's life, day-by-day, you can't jump ahead or "arrive" at somewhere you think will be better; living and experiencing life is not what we think about it.