This mirrors my experience.

I was determined to have an IQ of 139 at age eight by a school psychologist. I was educated in a special program, attended an Ivy League university in the US, finished graduate school in the top 1% of my class, and work a well compensated job I dislike and will leave shortly.

To answer the main question, I find it isolating and a bit scary right now, but also stress-relieving.

I cannot connect with the average person though I really like some for their kindness. This is because I have a different lived experience. I consume different media. I don’t have their problems (money, vices, romantic instability, political agitation). I dislike how populism and hatred are rising, and am concerned that we are ignoring real issues (climate change, deficit spending, pollution) for fake ones (immigrants, “woke” culture, crime). At the same time, I wealthy by any objective standard, don’t have to work, and follow most medical guidelines (little exercise due to work schedule) so weigh an appropriate amount and am in good health.

I will acquire the book you recommend. My read French is decent. I have thought little about my IQ and perhaps should.