How do I accept myself completely and heal ?

So I’m struggling with anxiety and depression these days mainly because of my academic pressure and living situation. But when I feel mentally unwell, my past trauma became alive again replayed in my head repeatedly and I have trouble accepting myself. For the context, a girl I knew personally attacked me out of nowhere and blamed me for no reason in the past(not too long since then). She used the “have some therapy” tactic as a weapon to use against me. (She means I am crazy). But I didn’t harm anyone nor I didn’t start the fight. She crossed the boundary first. And I mean having therapy is not a shame. People can physically become sick as well as mentally unwell. That can’t be a weapon to use against someone who has no control of their illness. So, when I feel depressed or have some anxiety, in my head, her words replayed and I kind of blame myself as if I have done something wrong. I know if I become like this, this is exactly what she wants, but how can I get out of this loop and heal myself that having anxiety or depression is not something to blame? And I don’t want to trouble people besides me because I am in depression and I am struggling with anxiety.