How do I deal with anxiety?

I'm a senior in high school and I can't wait to get the hell out of high school. But I'm honestly really scared of leaving home. I have been getting these anxiety attacks where I think about everything that sucks about my life and leaving home is the cherry on top. It gets me really stressed out and usually experience trembling and feel sick to my stomach and sometimes I cry. I don't know what to do
How do I deal with anxiety?
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