Don't know about this fella, however, from experience I do know the frustration from cognitive issues and being self-aware.
I'm a pretty relaxed and happy fella as a rule. during bad times I find myself getting angry, frustrated, embarrassed, and emotional. Struggling to make a cup of coffee. Brushing your teeth with Polysporin, I did get a chuckle out that, brings you to your senses real quick. Forget where you are going. I lost it on a taxi driver this week, that is just not me. Forgot the name of the receptionist at the dentists office, called her the wrong name. Names have always been so important to me. And then you remember strange and random things, you wonder what the hell is happening to you. Then you worry and stress. It's a bit of an endless circle.