The username and the obsessive refs by the person you're responding to make me want to totally dismiss him. You see that kind of stuff a lot with this particular topic.

HOWEVER, many people simply want to change their own behavioral patterns and have a hard time doing it. Will they be measurably "happy" if they succeed? That's not the point. There's value in being able to do something (or stop doing something).

None of these things are ever going to be "quantifiable" in a practical sense.