How to deal with an overly critical mother?

My mom literally criticises everything I do. The way I talk, the way I dress, what I eat, what I buy, even the way I breathe. She told me to stop breathing so loudly, although she knows I have severe asthma. I can't take it anymore. I tried everything: talking to her, asking her to stop, ignoring her... Nothing worked. What would you do if you were in my position?

How to deal with an overly critical mother?
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