HOW DO I MAKE MY MUM BELIEVE ???

my mum said its not a big deal that I pick and that she dose it so its not bad but im sick of people staring at me and I want to stop. she said its coz im stressed , but even if I am she still gives me more stuff to do and still tells me of. she obsesses about how clean the house is so I never stop. I just want her to know I want to stop and that there is something wrong with me but she never believes me. how can I make her believe ?