“They were normal when I picked them,” he told Vaillant in the 1960s. “It must have been the psychiatrists who screwed them up.”
Excellent, and long, article at The Atlantic on what happiness is.
Apparently its love and friends.
True, but those damn serotonin levels can get you even when you love your family and have some friends. When melancholy grabs me, I can just be sitting there, having a normal day, when a sort of physical wave rolls in and makes me just want to lie down and hide.