There’s at least one case I know of when a brain injury caused a person to lose contact with their emotions. Many consequences, some unexpected. Making simple decisions with only logic and rational thought proved to be excruciatingly difficult. The subject would get stuck on the cereal aisle for an hour or more, too many choices, no way to sort out and weigh the variables. It seems that Mr. Spock’s supposed advantage, pure unemotional logic, was actually a handicap, that we use the emotional parts of our brains to sort out difficult or trivial decisions, that emotions tell us which are which.[Getting to know your emotions, becoming comfortable with them, using that rational brain to study the science of emotions, emotional health, damage or malfunction, might ultimately make happiness accessible.