I sometimes wonder: Of those people who said they'd work less/be happier/live truer etc how would they feel if they really did get to redo their lives with that

I sometimes wonder: Of those people who said they'd work less/be happier/live truer etc how would they feel if they really did get to redo their lives with that ethos? Would they regret different things? Would they wished they'd worked even less, or perhaps work more?