I quit my job, what do I do now?

So, I quit my job because it has just been way too stressful. Problem is, I am almost 20 with little work experience, no specific major, and all my interests are way hard to find a career in. (Theatre.) My family is very supportive and wants me to follow my dreams, but my friends think I should focus on getting work experience and picking a major just to be sure I'll have a future. I know I'll need a set career eventually, but I really do not want to be stuck with a career that I hate. The only thing I am one-hundred percent sure of at the moment is that I need a break over the holidays to sort some things out. But, I need some serious advice: What should I do?