Grudges..Ha, I’m still upset with my 5th grade math teacher and that was 40 years ago. Yes, I am one of those silence and rage people. I usually let things fester and rot inside me because I know when I reach my break point, I get explosive. Regrettably, this has put a strain on my relationship with some of my siblings too.
For me, I don’t think the grudges come from ADHD but from anxiety. I discovered pretty late in life that I have OCD and not in a way many would visualize OCD which made it somewhat difficult to diagnose. People with ADHD often have heightened anxiety and OCD. I’m getting better with these things now since I started working with a CBT and ERP therapist.