I don't know what to do any more

I feel anxious all the time as if there's a big shadow following me and in charge of every decision I make, Ive been dealing with it for a few years now and I hate myself I barely recognise my own reflection, I've lost who I am to it and I'm scared so very scared all the time I'm struggling with myself and the ability to breath even becomes hard my chest closing up and my throat feels as if it swells so I self isolate and anything can set me off even in my hobby, job, college, at home or out with friends and I don't want to feel scared in my own home I hate my skin and I feel uncomfortable in it and I don't want to be me any more. I feel anxious all the time as if there's a big shadow following me and in charge of every decision I make, Ive been dealing with it for a few years now and I hate myself I barely recognise my own reflection, I've lost who I am to it and I'm scared so very scared all the time I'm struggling with myself and the ability to breath even becomes hard my chest closing up and my throat feels as if it swells so I self isolate and anything can set me off even in my hobby, job, college, at home or out with friends and I don't want to feel scared in my own home I hate my skin and I feel uncomfortable in it and I don't want to be me any more. I know I posted this before I posted it on the wrong bit like an idiot as I normally am I just need help I don't understand what I'm doing with my life any more