I think many smart people tend to be pretty good at building models of the world, and then sort of move into the models and fail to verify that they are accurate.

This can lead to unhappiness because things can feel a lot more hopeless than they are, also makes it incredibly easy to fall into conspiracy theories, and get drawn into red- and blackpill stuff.

Someone who is less smart may just ask a friend or family member, and get an outside perspective on the problems instead. This is not just comforting, but often helpful.