"The Science of Happiness" -
which does sound a bit dubious but I think re-phrasing and can be rewarding as better re-worded meaning.

so more neutrally said:

"The science and efforts of working together towards being more happy and making that a 'Science' we base things from"
(not just physical matter of science and physical happiness to the measurement of how happy we are).

So one can make it sound less like the "Church" of Happiness or The "Science" of Happiness and maybe best = "Way" of Happiness

Even words like "Spiritual" might take it too far (even worse when capital letter perhaps written "spiritual" vs "Spiritual") for people to offend or misguide themselves less.. BUT take it down a notch or 10 notches to be more accurate

And I mean about the "Science" part or sciences... I want things *Not only* physically focussed by Science or ALL people's actions in life (mostly by-design not caring about soul at all today) so the rest of the human body you could say (the mind / moral health and eventually yes spirit of people or better way of being happy from those up top not being nice!)

Obviously a science would exist for that so easily if at all, as it's counter-intuitive to power / money accumulation etc!

Tech = Power
Spirit = more Happiness / Togetherness eventually?