Or, they might have what looks like a good life to outsiders - eg super-rich celebrities with lifestyles idealised by the media - but actually living it is hell

Or, they might have what looks like a good life to outsiders - eg super-rich celebrities with lifestyles idealised by the media - but actually living it is hell. But I still strongly agree with your point. My strongest influence on this stuff is The Biology of Belief by Bruce Lipton, who explains how it all works on a cellular and genetic level.