happiness vs. joy

i'm reading a book called "social intelligence" by daniel goleman, and i found this to be an interesting assertion considering it is not coming from any kind of christian perspective.

in regard to parenting and shielding children from any kind of difficulty or failure:

"that notion misreads the data on resilience and happiness: such overprotection is in fact a form of deprivation. the idea that a child should avoid misery at all costs distorts both the reality of life and the ways children learn to find happiness.

more important for a child than seeking some elusive perpetual happiness, researchers find, is learning how to deescalate emotional storms. the goal for parenting should not be achieving a brittle 'positive' psychology-clinging to a state of perpetual joy in one's children-but rather teaching a child how to return on her own to a state of contentment, whatever may happen."

interesting contrast of happiness compared with joy. even from a worldly perspective, they don't believe shielding oneself from pain produces depth and true joy. i wonder what the prosperity gospel blasphemers would say about this.. haha...