The anxiety and the anger are actually two separate issues. Both of them are reactions that become neurological patterns. Both of them can be changed. In my experience getting release/relief front he anger (sometimes rage) became the first. I am still working on the anxiety. The anxiety is much more painful and unpleasant for me. Anger would come and be released and then there would be consequences but there were much less omnipresent than the anxiety.
Yes the anxiety is miserable. but the way forward is to be aware of it and to not repress it. This is easy to say and difficult to do.
I encourage you to focus on the anger first.
Do you think that knowing that you will be misinterpreted before you even get there can help you when you experience it to simple acknowledge to yourself that you are indeed experiencing there very thing you expected. then spend some internal time just recognizing the miserable feeling and validating for yourself where it comes from.
By acknowledging to yourself what you are experiencing you are bringing the past (possible unconscious) wounds out into the present. The pain will be felt but that is where the healing comes as well. Talk to yourself as you experience it and provide the comfort for yourself that you need and deserve.