My at-home life is terrible?

My mom verbally abuses me. Because of it, I have acquired MANY grey hairs (im only 18), overactive thyroid and thyroid disease (due to high stress), severe depression, and clinical anxiety. What do I do to reduce my stress level? My mom will not verbally abusing me. My grades are dropping and I feel down all the time. PS. I've tried multiple "psychologists" and it is not my thing. Help?