I have just discovered a strange new feeling. A feeling, directed at yourself, and in a way close to embarrassment, a feeling of shame. But accompanied by a barrage of righteous indignation, that arises when someone wrongs you, insults you so deeply, that in the first few seconds you are not even angry, just shocked. I think the best way to describe it is "self-insult". When you feel angry at yourself not for letting you or someone down, but for disrespecting yourself, even if simply by being careless.
It has been a along time since I felt an emotion that strong. I missed that.
A cause was rather insignificant, or at least not life changing in any way - just a careless miscalculation of strength on my part, that might have hurt someone, but luckily didn't.