It is not necessarily more “happiness†we seek in life, but greater health.
Vigor
To me, to gain “greater health†means to gain more vigor. More power, more chutzpah and desire for movement, more energy, more liveliness.
Will it give you more vigor or not?
Then perhaps the thing to optimize for is,
Will it give you more vigor or not?
If yes, it is good. If it doesn’t give you more vigor, disregard.