2008-2009 aging americanfiction americanhumorousstories americans amerikanischesenglisch appliedpsychology businessmen developmental diet families familylife fiction fitness general globalfinancialcrisis health kingsandrulers life lifespandevelopment middleage movements newyorktimesbestseller newyorktimesreviewed nonfiction nyt:hardcover-fiction=2012-07-08 nyt:trade-fiction-paperback=2013-06-30 popularpsychology psychology recessions salespersonnel saudiarabia self-actualization(psychology) self-help self-improvement transpersonal