This article (brief) is based on a Harvard University study on the ages when we are best at certain things in life… there’s a book, apparently. Aging Well: Surpising goalposts… Haven’t read it. Just reporting.
Excerpt from the article:
"…the age at which you’ll earn your highest salary has a fairly large gender discrepancy — women will reach their peak salary at age 39, while men do so at age 48. Yet both genders reach peak arithmetic skills at age 50. The following year, at 51, is when people are best at understanding the emotions of others. Peak vocabulary occurs at age 69, peak happiness with your body at 74, and last on the timeline is peak psychological wellbeing, which is reportedly reached at age 82. "