The topic of "hyperfocusing" is interesting to me. The term is most often used when describing ADHD, but also sometimes OCD. Then there is the manic "project/goal driven" symptom. How different is that from hyperfocusing? This is perhaps a topic best addressed someday in a separate thread, for sure. I have written a little on this topic in a past blog post. This symptom has been a significant one in my life. It helped me achieve amazing things, at times. It was also a contributing factor leading to my worst years with bipolar disorder, and subsequent disability. There are similar stories of other people with bipolar disorder. The composer Robert Schumann comes to mind.