What to do after High School?

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I'm graduating high school at 17 years old and right now I'm a sophomore. I don't turn 18 until July and school gets out in May, so I was wondering what you do after you graduate. I like to think ahead, so I'm as prepared as possible, and I already know my dream job. It's to be a psychiatrist. But since I'm only 17, how far away can I move from my parents? What do I do in between the time of 17-18? And most states require a work permit at 17 working only a limited amount of hours. I definitely know what to do when I'm 18. Just wondering what to do waiting to turn 18.