Hy M A Girl Of Sixteen...i M Ri8 Now Feeling

Hy m a girl of sixteen...i m ri8 now feeling totally hopeless and useless...its my big story..of life...it starts from 9th class and today m in 11th and it became so much of stress and tension...nothing is going ri8 now in my life I Am totally mentally disturbed ri8 now...i think that m good for nothing...and my confidence level is zero now...i want help i wanna tell u story of my life from 9th but it will not be possible here to tell...by the way plz help me in any ways..!