Perhaps it is, “The whole problem with the world is that fools and fanatics are always so certain of themselves, and wise people so full of doubts.” Bertrand Russell

High IQ tends to put you outside of the main-stream . In elementary school , you don't , "fit in. " You tend to get bullied . You become an introvert and tend to turn to reading , which puts you even further from the level of the kids in your classes . It doesn't actually mean you aren't happy . It means your happiness isn't derived from being with friends your own age . You're looking for friends your own mental age , who may have difficulty connecting with you , due to your physical age and development . I find myself smiling much more now , than at any point earlier in my life .

I simply do not agree. Intelligence can take many forms. This is about the psychology of the person, not how intelligent he is. There is so much to be angry about in this world - mostly caused by stupidity. It is possible to be both happy and recognize these bad things. Here is where the word "spiritual" comes in. That can mean many things - but being positive, grateful for the good things in your life, having a comfortable degree of humility, and a good self image are certainly important for happiness and an enriched spirit. So you can be happy and smart at the same time.

“There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.”
That is a quote from Isaac Asimov. I have observed the same thing since I came here. It may be tough to be clear thinking and a wide -eyed observer as a child and not get the feedback you expect, but happiness is a personal choice. Even the definition of happiness is personal. So, no, Ernest, I do not agree with you. You were clinically depressed, mushed up your brain with too much alcohol and ate your gun, if I remember correctly.

High IQ creative people are usually androgyne..or gender mixes.
Many of the most intelligent and creative of them suffer from mental illness issues, depression, and/or are on the autism spectrum.
Scientists found that DNA for creativity had increasing percentages of DNA flaws, increasing the likeliness for mental issues as the creativity levels rose.

The Complexity of the Creative Personality [blogs.psychcentral.com]

Sadly I know many people who are mean, and I take that as a sign of an unhappy person. Ignorance is NOT bliss. Happiness is a choice. I've known people who had everything going for them that were not happy. I'd look at them and think what more do you f**kin want? Stuff doesn't make you happy. I choose to be happy because it is healthier for me. My life isn't great, but damn it I will look on the bright side, it could be and has been way worse. And it is Friday and if I want to I will stop on the way home and get some good chocolate and some sushi, and I have a good book or Netflix, and some good stuff, and I will be happier than all get out.

A long time ago I worked with folks with Downs Syndrome. Overall, they seemed to be a happy lot. However, I wouldn't of traded places with them

Yes, I find conversely, happier people are less intelligent, does that mean they are smarter because they have found way to be happy?

No, not personally nor among my friends, in fact, au contraire....at our age, (65 & way up) we have all dealt with setbacks & tragedies, and the overriding characteristic of the most intelligent people is an upbeat attitude of "let's go out for dinner & dancing"!

There's nothing a little 420 listening to an Alan Watts lecture can't solve. But I think the acquisition of knowledge does tend to cancel out some of that childish sense of wonder and excitement. Some people likely realize that happiness is an active daily choice that sometimes requires a bit of delusion.

I love intelligent people ..I tend to both analyze and admire them They’re too smart, or aware to maintain a constant state of giddiness, but there’s humor within. And when they burst into laughter - it’s a treat!

Few things annoy me ...nothing annoys me more than fake.. Dumb isn’t even fake. But folks who attempt to present happy or jovial behavior at all times... Come on, life’s also serious, and I think the intelligent both recognize and appreciate that.

Well... I'm intelligent in my own fields. I can also fly different aircraft.... I am so very happy... I have some concerns about some things but im living the life...lol.

If you Google it there seems to be quite a bit of research that supports the corollary between intelligence and mental illness in general. I thought this article was interesting.
[thecrimson.com]
Generalized anxiety and depression here. First hit me in my teens and then I found love and chaos and all was well for years. I mean there were ups and downs but nothing like the pit. Fast forward thirty years and towards the end of marriage #2 it fucking snuck up on me. I didn't realize it was that bad. Now thanks to an amazing therapist (she says I did all the work) all is well again. I still see my therapist about once a quarter mostly to keep that door open. And I'll always be vigilant now, I won't let it get that bad again.

I would say talk to all of the people that are truly happy, and find out.

Intelligence can be a mixed blessing. It grants those who possess it an insight to the world and this has an impact on overall happiness. Those with it could see the paths that governmental representatives are taking, and this can have an adverse effect on happiness. Those of higher intelligence have a greater capacity for creativity, this could have a positive effect on happiness. Therefore happiness is subjective.

It's easy to just believe that we all go to heaven and are reunited with loved ones when we die... That helps people to be happy... It's depressing when you question it. I can't answer that question, but I still think the Bible is fiction. It's a crutch to provide temporary relief or happiness from the unknown.

There's some truth to "Ignorance is Bliss "! But, remember Hemingway suffered life-long bouts of depression, and eventually took his own life .

Some of the comments mention or allude to the fact that their are multiple intelligences. I would say the intelligence that is most closely correlated with happiness is emotional intelligence. The more emotionally intelligent you are the more skilled you will be to achieve happiness. 'Frames of Mind: The Theory of Multiple Intelligences' by Gardner is a good place to start.

Being smart is a lonely feeling. Most people don't know what you're talking about.

It reminds me of a episode of the Simpsons where Homer discovers he has a crayon imbedded in his brain and that's what makes him dumb. So he has it removed and he becomes really intelligent but he soon finds that he's really lonely because nobody is on his level. So he has the crayon placed back in his brain.

Maybe it’s because intelligent folks think too much and question everything.

I think of happiness as a skill and like all skills it takes time and practice to improve.

Think of it this way... movie stars are unhappy. They kill themselves even though they have millions of dollars and all the fame and respect they could ever want.

Poor people THINK their unhappiness is due to the things they don't have in life. If you elevated a poor persons income, they'd definitely be happy for a while. But not forever.

So one of the keys to happiness I think is continuous financial improvement. You always need a goal, and you always need to be making progress toward that goal. But if you're overly focused on it you obsess over small failures and that can make you unhappy too...

So another key is knowing how to compartmentalize. When something is going wrong, address it logically, but don't allow yourself to focus on it in any more than is necessary to deal with it effectively. If you can't influence it, learn to not let it affect your emotional state.

I think what I'm trying to get at here is that happiness can be learned and improved... things that smart people are supposed to be good at. So I disagree with the post!

I’m not happy, but I don’t know if it works that way.

I must be dumb.

I am happy almost all of the time.

I am happy almost all of the time because I choose to be.

I do not tolerate negativity in myself (or others).

Maybe I have had a charmed life, but my personal talking therapy has worked well for me.

However - I do not underestimate how debilitating a clinical depression can be - this is very different to just being unhappy and requires skilled professional intervention.

This from a man who killed himself and then his gun got passed to his son who did the same thing. Maybe that proves his point.

Define happiness.