Good Life, Lessons from the World's Longest Scientific Study of Happiness, Simon & Schuster, Marc Schulz, Robert Waldinger,Assertiveness, motivation, self-esteem and positive mental attitude,Popular psychology, Harvard Longitudinal Adult Study; Harvard Study of Adult Development; happiness studies; science of happiness; how to be happy; life satisfaction; fulfilling life; relationships; Jay Shetty; Angela Duckworth; Laurie Santos; wellness; healthy living; old age; longevity; health; adulthood; how to be an adult; divorce; friendships; marriage; couples; communication; aging; well-lived life; flourishing; thriving; coping; coping with stress; managing emotions; overcoming challenges; adult development; social connections; social fitness; lifespan; loneliness; social isolation; Glueck Study; Grant Study; resilience, healthy aging,, , United States, en-UShttps://www.simonandschuster.comHarvard Longitudinal Adult Study; Harvard Study of Adult Development; happiness studies; science of happiness; how to be happy; life satisfaction; fulfilling life; relationships; Jay Shetty; Angela Duckworth; Laurie Santos; wellness; healthy living; old age; longevity; health; adulthood; how to be an adult; divorce; friendships; marriage; couples; communication; aging; well-lived life; flourishing; thriving; coping; coping with stress; managing emotions; overcoming challenges; adult development; social connections; social fitness; lifespan; loneliness; social isolation; Glueck Study; Grant Study; resilience, healthy aging, [BLURB],[CITY],New York,books, ebooks, biblet, Book2look