As I understand, happiness is free time from necessary work. Quote from book Hunnicutt, Free time:
Benjamin Franklin, agreeing that “the happiness of individuals is evidently
the ultimate end of political society,” offered his vision of Higher Progress:
If every man and woman would work for four hours each day on some-
thing useful, that labor would produce sufficient to procure all the necessaries and comforts of life, want and misery would be banished out
of the world, and the rest of the twenty-four hours might be leisure and
happiness.
Also Epicur:
"Epicurus believed that the greatest good was to seek modest, sustainable pleasure in the form of a state of ataraxia (tranquility and freedom from fear) and aponia (the absence of bodily pain) through knowledge of the workings of the world and limiting desires. "
Wouldn't it then be easier and more logical to set the goal as 'reduction of work hours from ... to...'?
Personally, I don't believe that working less (or more) makes people happy (unhappy), but my whole point is that defining your future goals in terms of happiness and attempting to measure it is futile by definition.
Benjamin Franklin, agreeing that “the happiness of individuals is evidently the ultimate end of political society,” offered his vision of Higher Progress: If every man and woman would work for four hours each day on some- thing useful, that labor would produce sufficient to procure all the necessaries and comforts of life, want and misery would be banished out of the world, and the rest of the twenty-four hours might be leisure and happiness.
Also Epicur: "Epicurus believed that the greatest good was to seek modest, sustainable pleasure in the form of a state of ataraxia (tranquility and freedom from fear) and aponia (the absence of bodily pain) through knowledge of the workings of the world and limiting desires. "
https://en.wikipedia.org/wiki/Epicureanism