It was The Pursuit of Unhappiness: The Elusive Psychology of Well-Being by Daniel M. Haybron https://books.google.com/books?id=jAEBzgqniMAC&printsec=frontcover

It was The Pursuit of Unhappiness: The Elusive Psychology of Well-Being by Daniel M. Haybron https://books.google.com/books?id=jAEBzgqniMAC&printsec=frontcover&dq=philosophy+of+unhappiness&hl=en&newbks=1&newbks_redir=0&sa=X&ved=2ahUKEwjbpZLvudHnAhVRvFkKHXETDlAQ6AEwAHoECAgQAg#v=onepage&q=amish&f=false https://books.google.com/books?id=jAEBzgqniMAC&printsec=fron... I read numerous books on topic of Positive Psychology ... a really good academic one, tying together the field into a unifying framework is: The Good Life: Unifying the Philosophy and Psychology of Well-Being by Michael A. Bishop