I'm fairly happy but I have Stoicism and Taoism to thank for that. Mental health in my experience depends on having the right psychological toolkit.
Toolkit suggests something you come by via exposure not via learning (as learning is presumably facilitated by IQ).
What are the toolkits for happiness one acquires as a non high-IQ person? I guess some of these are social tools from like-minded people.
“Happiness in intelligent people is the rarest thing I know.” ― Ernest Hemingway, The Garden of Eden see here
Did you know The surprising downsides of being clever? Is Happiness And Intelligence: Rare Combination? There are longitudinal studies which seem to imply this: Being Labeled as Gifted, Self-appraisal, and Psychological Well-being: A Life Span Developmental Perspective
I found these via slashdot.
As LessWrong is harbor to unusually high-IQ people (see section B in here). I wonder how happiness compares to the mean. What are your thoughts.